2015 GMC Sierra 1500 Reviews, Ratings, Prices - Consumer Reports
The Sierra has been a good choice for years, and the redesigned 2014 version is an even better performer. With this overhaul, the model landed some solid punches in the ongoing pickup wars. Handling is more carlike than in most others and the cabin is as quiet as a luxury car's. An assist system makes the tailgate easy to lift and prevents it from dropping open, easing cargo-handling duties.
Alerts
There are 9 recalls on this vehicle. Learn More.

Road Test Results

Performance
Acceleration Acceleration Acceleration tests are conducted on a smooth, flat pavement straightaway at the track. Time, speed, and distance measurements are taken with a precise GPS-based device that’s hooked to a data-logging computer.
0 to 60 mph 0 to 60 mph (sec.) The time in seconds that a vehicle takes to reach 60 mph from a standstill with the engine idling.
Transmission Transmission Transmission performance is determined by shifting smoothness, response, shifter action, and clutch actuation for manual transmissions.
Braking Braking The braking rating is a composite of wet and dry stopping distances and pedal feel. Braking distance is from 60 mph, with no wheels locked.
Emergency Handling Emergency Handling Several factors go into the rating, including the avoidance maneuver speed and confidence, as well as how the vehicle behaves when pushed to its limit.
Comfort / Convenience
Ride Ride Our expert judgment of how well the suspension isolates and absorbs road imperfections and how steady it keeps the body on various road surfaces.
Noise Noise Our expert judgment of the vehicle's interior noise level in everyday driving.
Front Seat Comfort Front Seat Comfort Our judgment of how comfortable the front seat is for drivers of various heights.
Rear Seat Comfort Rear Seat Comfort Our judgment of how comfortable the rear seat is for two passengers to sit across.
Interior Fit and Finish Interior Fit and Finish An expert evaluation of the interior quality and craftsmanship.
Trunk/Cargo Area Trunk/Cargo Area Our rating is based on the amount of luggage or cargo space that a vehicle has in the trunk or cargo area.
Fuel Economy & Emissions
Fuel Economy Fuel Economy We perform our own fuel-economy tests, independent of the government's often-quoted EPA figures and the manufacturers' claims. Using a precise fuel-flow measuring device spliced into the fuel line, we run two separate circuits to represent city and highway consumption.
CR's Overall Mileage CR's Overall Mileage CR's overall mileage is a composite of measured fuel usage on a prescribed city course and highway cruising; and CR's 150-mile test trip of mixed driving, if tested. In recent road tests, we've discontinued the 150-mile trip test.
CR's City Mileage CR's City Mileage Measured fuel usage on a prescribed city course.
CR's Highway Mileage CR's Highway Mileage Measured fuel usage on a prescribed highway cruising.
Annual Fuel Cost Annual Fuel Cost The cost and amount of fuel used in 12,000 miles and is calculated from CR's overall mileage.
Greenhouse Gas Greenhouse Gas The Greenhouse Gas Rating represents the amount of carbon dioxide the vehicle emits compared to other vehicles of the same model year. This score from the EPA ranges from 1 (worst) to 10 (best).
NA
Smog Rating Smog Rating The Smog Rating represents the amount of health-damaging and smog-forming airborne pollutants the vehicle emits compared to other vehicles of the same model year. This score from the EPA ranges from 1 (worst) to 10 (best).
NA

Owner Reports

Worse Better
Reliability History Reliability History The reliability charts are based on responses on hundreds of thousands of vehicles from our latest Annual Auto Survey. Consumer Reports subscribers reported on any serious problems they had with their vehicles during the past 12 months that they considered serious because of cost, failure, safety, or downtime, in any of the trouble spots included in the table below. The results are presented relative to the average model that year. Extra weight is given to the more serious areas such as major engine or transmission problems. Based on this data and further analysis, we predict reliability for the latest year. N/A indicates that we did not receive a large enough sample size to provide data for a specific year. An X indicates that the vehicle was not manufactured for a specific year.
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Reliability Trouble Spots
Engine Major Engine Major Engine rebuild or replacement, cylinder head, head gasket, turbo or supercharger, timing chain or timing belt.
Engine Minor Engine Minor Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, oil leaks.
Engine Cooling Engine Cooling Radiator, cooling fan, antifreeze leaks, water pump, thermostat, overheating.
Transmission Major Transmission Major Transmission rebuild or replacement, torque converter, clutch replacement.
Transmission Minor Transmission Minor Gear selector or linkage, leaks, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission.
Drive System Drive System Driveshaft or axle, CV joint, differential, transfer case, 4WD/AWD components, driveline vibration, traction control, electronic stability control (ESC), electrical failure.
Owner Satisfaction Owner Satisfaction To learn about satisfaction, CR has collected survey data from our annual survey on more than half a million vehicles. Our subscribers provide great insights into their satisfaction by answering one simple question: If they had it to do all over again, would they definitely buy or lease the same model? In addition, respondents also rate their cars in six categories: driving experience, comfort, value, styling, audio, and climate systems. N/A indicates that we did not receive a large enough sample size to provide data for a specific year. An X indicates that the vehicle was not manufactured for a specific year.
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Driving Experience Driving Experience Includes acceleration and handling
Comfort Comfort Includes seats, climate control, noise, and ride
Value Value Did you get what you wanted relative to the price you paid?
Styling Styling How it looks inside and out
Safety Equipment
ABS standard. Head protection air bags and ESC standard from 2010. Side air bags standard from 2010.
Road Test

The Sierra has been a good choice for years, and the redesigned 2014 version is an even better performer. With this overhaul, the model landed some solid punches in the ongoing pickup wars. Handling is more carlike than in most others and the cabin is as quiet as a luxury car's. An assist system makes the tailgate easy to lift and prevents it from dropping open, easing cargo-handling duties. And, at 16 mpg overall with a 5.3-liter V8, our four-wheel-drive Crew Cab model got impressive fuel economy.

In addition, a relatively low ride height eases access, the dashboard controls are simple to use, and the Sierra provides impressive towing and payload capacities.

Seating
3 front, 3 rear
Drive Wheels
4WD, Rear
Warranty
Coverage varies among versions of this vehicle

In most cases, automotive warranties are based on the vehicle identification number (VIN), and the warranty will be valid regardless of ownership. The dealership can tell you exactly how much warranty is left.

Read more about extended warranties
Body Styles
extended cab
regular cab
crew cab
Transmissions Available
  • 8-speed Automatic
  • 6-speed Automatic
Engines Available
  • 4.3-liter V6 (285 hp)
  • 5.3-liter V8 (355 hp)
  • 6.2-liter V8 (420 hp)

Owner Reported Trouble Spots

The Reliability score is based on our latest subscriber survey of 2015 GMC Sierra 1500 owners. The owner comments describe problems respondents experienced with this vehicle.

Climate System

Blower (fan) motor, A/C compressor, condenser, evaporator, heater system, automatic climate control, refrigerant leakage, electrical failure.

What Owners Say

A/C compressor

"Leaked, replaced under warranty"

Zachary H., SC (2015 GMC Sierra 1500 SLE 5.3-L V8)

"AC compressor failed at 42000"

Anonymous, KS (2015 GMC Sierra 1500 Denali 5.3-L V8)

"Seal leak so the Freon leaked out!"

Bruce F., CA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Compressor went out at 70000 miles. $1300 repair cost. Also shocks had to be replaced for $1000."

Anonymous, CO (2015 GMC Sierra 1500 Denali 5.3-L V8)

"A/C Condenser failure at 65,000 miles"

Anonymous, CA (2015 GMC Sierra 1500 SLE 5.3-L V8)
Automatic climate control

"AC has failed being looked at it on thursday may 11th"

Richard M., NH (2015 GMC Sierra 1500 SLE 5.3-L V8)

"When the heat is on it doesn't always work- very inconsistent"

Matthew H., ME (2015 GMC Sierra 1500 SL 5.3-L V8)
Blower (fan) motor

"It doesn't always adjust appropriately, I.E. when you turn the blower down, it doesn't always go down"

Matthew H., ME (2015 GMC Sierra 1500 SL 5.3-L V8)
Condenser

"101145 Condenser leaks refrigerant, had to be replaced. Cost about 1200 dollars"

Anonymous, GA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"I told the dealer service department while there for routine maintenance that the cooling system was cooling properly and that it was either low on Freon or overcharged, but most likely low as it was short cycling the compressor. I further told them it may be a bad pressure switch either high or low, kicking off the compressor. I was told They didn't think so as it was only on the road for 10 months. After checking they told me the condenser was bad. They fixed that. 16 months later it was the evaporator, they fixed that."

Anonymous, PA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"The condenser had a leak in one of the welded joints and was known to have problems but because I had 1500 miles past the warrantee the dealer wanted to charge me $1400 to fix it. I replaced the part myself with the help of youtube for less than $100"

Anonymous, GA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"The condenser failure in these vehicles is a common problem that is expensive to fix ($1500). Parts are scare as the problem is common. GM has extended the warranty for this part in Suburban, Tahoe, Escalade SUVs, but not the pick up trucks that have the exact same running gear. I believe the the condenser failure is a design or manufacturing defect. I understand that the condenser allows water into the system, and when it gets cold enough in the winter, the water turns to ice and cracks the fitting at the front of the condenser, requiring the condenser to be replaced. To repair the condenser, the radiator has to be removed... it turns out to be a very labour intensive procedure. I've been waiting for a replacement condenser for 2 months now. It's July now and I really miss the air conditioner."

Anonymous, (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Condenser developed a leak caused by a crack in a corner weld. Dealer said it was a common problem."

Anonymous, LA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Condenser cracked at welds. Refrigerant leaked out."

Bruce D., ON (2015 GMC Sierra 1500 SL 5.3-L V8)

"it had a leak and had to be replaced"

Anonymous, IL (2015 GMC Sierra 1500 SLE 5.3-L V8)

"Air conditioning stopped working, AC Condenser had a leak and had to be replaced with a new unit. $1100 repair covered by extended warranty."

Mark G., CA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Condenser developed a leak. Dealer replaced. Warranty covered."

Anonymous, IL (2015 GMC Sierra 1500 SLT 5.3-L V8)
Evaporator

"after the condenser went bad and was replaced, 16 to 18 months later the ac was functioning properly again. I told them at the dealer service dept. it was again low on Freon. They did a leak check and pressure check and found that the evaporator was leaking. They fixed it and it was better than when I purchased it."

Anonymous, PA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"A/C evaporator core started leaking (30 days after warranty ended) and had to be replaced."

Anonymous, FL (2015 GMC Sierra 1500 SL 5.3-L V8)

"GM picked up half of expense"

Anonymous, IL (2015 GMC Sierra 1500 SLT 5.3-L V8)
Heater system

"Heater system sounds like boiling water at times"

Anonymous, GA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Heat was not working due to lack of coolant and radiator not working properly"

Anonymous, SK (2015 GMC Sierra 1500 SLE 5.3-L V8)
Refrigerant leaks

"leaky connections"

Ed M., TX (2015 GMC Sierra 1500 SLT 5.3-L V8)

"radiator had to be replaced"

Anonymous, NC (2015 GMC Sierra 1500 Denali 5.3-L V8)

"Radiator was leaking and could not be repaired so we had to replace it with a new one. Radiator hoses also leaking and had to replaced. Noticed issues when the truck was heating in -30C weather. Lack of coolant was the cause. Easy fix but fairly pricey!"

Anonymous, SK (2015 GMC Sierra 1500 SLE 5.3-L V8)

"AC quit cooling. Leak found in condenser and was replaced under warranty."

Anonymous, CA (2015 GMC Sierra 1500 SLE 5.3-L V8)

"I have had to put a few cans of leak stop and refrigerant in the truck to fix the issue. If it continues I will have to take it in for service soon."

Anonymous, (2015 GMC Sierra 1500 Unsure 6.2-L V8)

"The refrigerant leaked out due to the cracks in the condenser."

Bruce D., ON (2015 GMC Sierra 1500 SL 5.3-L V8)

"Condensor was leaking and had to be changed. Clutch dust all over compressor so it was changed as well."

Brian A., FL (2015 GMC Sierra 1500 SL 5.3-L V8)

Transmission Minor

Gear selector or linkage, leaks, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission.

What Owners Say

Rough shifting

"Only applies to 6.2l engine with 8-speed automatic. GM identified rough shifting issue due to defective torque convertor as shipped from factory. Second (related) issue is with leaking valve within transmission causing rough engagement from neutral to drive. If engine is off for 30 minutes, valve wouldn't hold pressure leading to slip "thunk" upon next transition from P or N to D. Both items are now covered under a GM technical bulletin"

Brian H., NC (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Horrible transmission. Always hunting for the right gear. Jerky and punchy. It's been to the dealer for a reflash and that improves things a tiny bit for a short time. Worst truck I've ever owned because of how it shifts"

Mark S., CA (2015 GMC Sierra 1500 Denali 6.2-L V8)

"vehicle surges at low speed like it is trying to decide what gear it wants to be in"

William C., TX (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Hard shifting starting and Down shifting . You can feel it driving and the passenger can feel also.Around 4 to 6 times in 2 years"

Anonymous, GA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Occasionally shifts rough not every time I drive it. Once chirped tires due to this"

Anonymous, CA (2015 GMC Sierra 1500 SLT 6.2-L V8)

"The 8 speed transmission performance is simply awful. It will frequently hesitate. If I accelerate lightly from a stop, then abruptly lift off the throttle, there is a short lag then the transmission will SLAM into gear so hard it feels like the vehicle was rear-ended. Upshifts are often jerky and the drivetrain "clunks" and pops and snaps constantly. The dealership said there is nothing wrong with it"

Mark N., TX (2015 GMC Sierra 1500 SLT 6.2-L V8)

"SHIFTS HARD WHILE GOING INTO REVERSE"

Jeff I., LA (2015 GMC Sierra 1500 Denali 6.2-L V8)

"There is an ongoing problem between 2nd and 3rd gear that the deslership cannot verify (transmission warm but not operating temperature)"

Donald A., ON (2015 GMC Sierra 1500 4.3-L V6)

"Truck continues to have rough shifting. I brought to the dealer and they say that's the way it is supposed to be. It's nothing like any other vehicle I've ever driven"

Anonymous, CT (2015 GMC Sierra 1500 SLT 6.2-L V8)

"See previous comment on severe SHUDDER when transmission transitions 6 to 7 and 7 to 6 gears."

Anonymous, MI (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Had this problem since new. Extremely rough shifting With the 8 speed transmission. Had it in shop a number of times; had the computer reset, the transmission oil replaced. About 8 months ago GM started using a Mobil 1 transmission fluid. While this has improved the shift quality, it is not perfect, and will on occasion shift very violently. It's extremely frustrating given the cost of the vehicle and the potential cost of replacing the transmission."

Anonymous, (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Shifts rough and at inappropriate times. Sometimes "clunks" so hard a passenger will comment what was that ?"

Anonymous, TX (2015 GMC Sierra 1500 SLT 6.2-L V8)

"The truck makes a loud noise when putting it into reverse. It has been taken to the dealership multiple times and they cannot find anything wrong with it."

Anonymous, SD (2015 GMC Sierra 1500 Unsure 6.2-L V8)

"Warranty transmission fluid flush"

Anonymous, MI (2015 GMC Sierra 1500 SLT 6.2-L V8)

"About a year ago, the transmission seemed to be "clunking" in the low gears. This has since been resolved."

Anonymous, (2015 GMC Sierra 1500 SLT 6.2-L V8)

"This transmission shifted poorly from the day I took it home. Over time it worsened until it hesitated & jerked into reverse. Dealer reprogrammed it, which helped for several months. But it is deteriorating into rougher shifting again..."

Anonymous, AR (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Dealer stated that error codes related to cylinder misfires but later said it was transmission related."

Lyn R., IA (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Rough up and down shifting"

Anonymous, SD (2015 GMC Sierra 1500 6.2-L V8)
Slipping transmission

"It jerks and almost got me killed crossing a 600ft high bridge"

Patrick S., LA (2015 GMC Sierra 1500 SLE 5.3-L V8)
Transmission computer

"Vehicle locked into 4WD while trying to parallel park. Vehicle was 2 weeks old at the time. Dealer immediately fixed problem with a software update and haven't had any problems since. Concern was having to drive 50 miles in 4WD to get to dealer"

Anonymous, OH (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Transmission holds too high a gear at low speeds causing the truck to hesitate or shutter"

Anonymous, TN (2015 GMC Sierra 1500 SLT 5.3-L V8)

"The transmission computer just doesn't know what to do sometimes and results in some shift grabbing (hard shifting) and is particularly rough when a drive gear is selected when the transmission is cold. I predict the transmission or parts of the power train won't make 75,000 miles. It is tearing itself apart!"

Allan G., WA (2015 GMC Sierra 1500 Denali 6.2-L V8)

"The transmission computer occasionally gets confused and disengages and then abruptly reengages to the engine making a rather violent shift and vehicle lurch. It has done this since the vehicle was new. The transmission otherwise works well."

Anonymous, WA (2015 GMC Sierra 1500 Denali 6.2-L V8)

Transmission Major

Transmission rebuild or replacement, torque converter, clutch replacement.

What Owners Say

Torque converter

"after repeated visits to service dept for poor shifting and vibration dealer decided to replace torque converter. Problems are better but poor shifting and driveline noise are still present. Dealer says poor shifting cannot be fixed"

Kevin K., TX (2015 GMC Sierra 1500 SLT 6.2-L V8)

"started slipping and dealer replace it under warranty"

William C., TX (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Vehicle had a shutter while driving at 55-70 mph. Reported to dealer, the found the bulletin on the torque converter and replaced it. The vehicle now drive like a new vehicle. Very happy"

Anonymous, WI (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Reported to dealer I had a vibration at driving speeds and the vibration varied on the same roads. There was a bulletin and the dealer replaced the torque converter under warranty. Very happy, vehicle is like new"

Anonymous, WI (2015 GMC Sierra 1500 SLT 6.2-L V8)

"There was a software update and the transmission continues to shift rough when it is cold now"

Todd J., CA (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Torque converter replaced in an effort to correct rough shifting. It helped but not much."

Anonymous, TX (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Torque converter malfunction causing replacement of torque converter."

Anonymous, CA (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Shifted rough and inappropriately. Took four trips to the dealer before torque converter was replaced. Truck still shifts rough at times but much, much better than before."

Jack R., TX (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Transmission slipping/clunking due to defective torque convertor, became significant at 23,000 miles after 4 years of ownership. Repair was covered under power train warranty. Appeared to be a known issue based on date of manufacture (early 6.2 w/8 speed transmission), would have been nice if GM reached out to owners rather than wait for failures. One more year and I wouldn't have had warranty protection for repair of a low mileage vehicle."

Brian L., CT (2015 GMC Sierra 1500 SLT 6.2-L V8)

"skip between gears, mainly the lower gears would have a long pause before engaging. when the gear finally did engage there would be a loud noice, followed by a jerking motion forward.......very frustrating,,,, GM service rebuilt the torque converter but problem still exists.....last time i carried it in with the same issue the service department recommendation was to, quote ...drive it till it gets worse. IN WRITTING!!!!! really!!! also, i noticed on the work order the milage out was the SAME as the mileage in,,,,when i questioned the service manager about it he stated that it was standard, whatever that meant....when i pursued he response to the follow-up manager he said it would be corrected, but other visits to the service department proved fruitless.....just sayin,,,......(the last part of this was just a stress release!!!! sorry!!!)"

Fred B., GA (2015 GMC Sierra 1500 SLT 5.3-L V8)
Transmission rebuild or replacement

"Transmission went out twice second time had to be replaced"

Bob N., AL (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Transmission warranty 100,000. Transmission needed work after 101,231 miles. The problem occurred one week after dealership performed 100,000 mile transmission checkup and transmission fluid replacement. Cost about 1200 dollars"

Anonymous, GA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Hesitating going into reverse. Trans was pulled and rebuilt under warranty"

Anonymous, (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Engine warning light came on. Repaired at Aamco Transmission"

Anonymous, NV (2015 GMC Sierra 1500 SLT 5.3-L V8)

In-car Electronics

CD or DVD players, radio, speakers, GPS, communication system (e.g., OnStar), display screen freezes or goes blank, phone pairing (e.g. Bluetooth), voice control commands, steering wheel controls, portable music device interface (e.g., iPod/MP3 player), backup or other camera/sensors.

What Owners Say

Backup or other camera/sensors

"The back up camera image gradually became fuzzier over time to the point that it was, for all intents and purposes, unusable. No amount of cleaning helped. After owning the vehicle for about 5 years I bought an OEM replacement camera for about $120. I immediately noticed that they lens design had been changed from the original. The new camera has a wider field of view and restored the clarity of the original camera when it was new. My hope is that the new design will not result in the same problem as the original."

Anonymous, MN (2015 GMC Sierra 1500 SLT 5.3-L V8)
External music device interface (e.g., smart phone, MP3 player)

"Ipod will work only sometimes with the audio system when plugged into a usb port"

Stewart M., MI (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Any time my wife connected her iPad to the vehicle, it took over the sound system and started playing music from the iPad. If you switched back to the radio, it would eventually switch back to the iPad music."

Anonymous, SC (2015 GMC Sierra 1500 Denali 5.3-L V8)
In-dash navigation system (GPS)

"Could not connect to get directions"

James D., IN (2015 GMC Sierra 1500 SLT 5.3-L V8)

"The GPS had to be repaired by dealer at least twice. The GPS was unable to work both times"

Anonymous, TX (2015 GMC Sierra 1500 Denali 5.3-L V8)

"Navigation and radio messed up only after 6 months old. Both would change on its own. Scroll through stations. GPS said I was in the middle of the ocean and also at one point in a lake, not even in this country. Voice control is a joke. Never seems to get it right"

Anonymous, LA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"I keep getting a "No Results Found" response when searching for directions"

H P., MD (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Broke at Branson, Mo. Reads off, At home in Loveland, Co reads Indian Reservation Badlands in SD. GMC dealer could not fix it and are ordering new GPS, On Star, Radio, etc. and are going to put it in when it gets in. I think it is under warranty. Other then that love the truck! Best one ever had!"

Don A., CO (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Problem with the Shark Fin antenna and programing"

David H., CO (2015 GMC Sierra 1500 Denali 6.2-L V8)
Radio

"My information , stereo screen had a few issues mainly the best information system I could by went bad as the reverse on the stereo for music froze up. Whole stereo system has to be replaced"

Michael M., TX (2015 GMC Sierra 1500 SLT 5.3-L V8)

"The radio had blips less than a second apart on several FM stations. The blips were sometimes stronger than other times. It is possible the radio did not properly handle HD radio signals. (The same stations sounded better when I streamed them using my mobile phone and a usb connection.) The dealer could not initially fix the problem. After several months of having the problem, I mentioned it to my local car repair garage. They found the solution which the dealer was able to fix under warranty. The radio sound is now acceptable, although still not as good as in the Ford Edge."

Barry W., MI (2015 GMC Sierra 1500 SLT 5.3-L V8)
Voice control commands

"Voice control is a joke. I give up almost always trying to get it to understand common commands"

Anonymous, LA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Voice commands can be finicky and sometimes just weird results, i.e. I'd say, call Sophia, it responds with Call Costco, is that right?"

Denis B., TX (2015 GMC Sierra 1500 Denali 6.2-L V8)

Body Integrity

Squeaks, rattles, wind noises, loose or cracked seals and/or weather-stripping, air and water leaks.

What Owners Say

Air or water leaks

"air leak or rattle in overhead panel"

Anonymous, WA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"water leak via xm antenna"

David H., CO (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Vehicle filled with water due to bad seal near windshield"

Robert W., OH (2015 GMC Sierra 1500 SLE 4.3-L V6)

"Leak at windshield"

Anonymous, LA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"I had a water leak from the sharkfin antenna on top of the truck"

Anonymous, NY (2015 GMC Sierra 1500 Denali 5.3-L V8)
Seals and/or weather-stripping

"top mounted antenna leaked that prevented satellite reception. $500+ cost to replace."

Anonymous, NC (2015 GMC Sierra 1500 Denali 5.3-L V8)

"Sharkfin antenna gasket failed in first year allowing water to leak from visor fitting into interior, replaced gasket under warranty. Lost XM reception last year and had to replace antenna at my expense, claimed it wasn't related to original issue."

Brian L., CT (2015 GMC Sierra 1500 SLT 6.2-L V8)
Squeaks or rattles

"The front seat is a lot of unnecessary squeaks and squirms"

Anonymous, MO (2015 GMC Sierra 1500 SLT 5.3-L V8)

"The dash rattles incessantly if you are on any sort of rough road. It started soon after I purchased the truck. The dealer has not been able to clear up the problem!"

Anonymous, ON (2015 GMC Sierra 1500 SLE 5.3-L V8)

"center console squeaks when resting my arm on it"

Edward J., OR (2015 GMC Sierra 1500 SLE 5.3-L V8)
Wind noise

"wind noise I can not tell where it is coming from"

David H., CO (2015 GMC Sierra 1500 Denali 6.2-L V8)

Electric System

Alternator, starter, hybrid battery and related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, distributor or rotor failure, spark plugs and wires failure.

What Owners Say

Cruise control

"It just doesn't keep the speed when going up or down even minor hills. It can drop up to 3 MPH before it kicks the accelerator on."

Anonymous, VT (2015 GMC Sierra 1500 SLT 4.3-L V6)
Headlights

"The factory headlights were substandard, especially for rural driving. This is a common problem on 2014 and 2015 GMC Sierras built prior to January 2015 and has been remedied by a GM service bulletin that provides upgraded headlights under warranty"

Anonymous, FL (2015 GMC Sierra 1500 SLE 5.3-L V8)

"The factory headlights were horribly ineffective at night. The dealership attempted to fix several times with no success. Had to install an aftermarket HID headlight kit to fix the issue"

Donnie P., IL (2015 GMC Sierra 1500 SLE 5.3-L V8)

"It should be very easy to change the headlight bulbs. On the passenger side, it is definitely not. You have to completely remove the air filter housing."

Anonymous, VT (2015 GMC Sierra 1500 SLT 4.3-L V6)

"The headlights provided in this vehicle are not bright enough.You can only see about 20 or 30 ft, ahead of your vehicle. I cannot drive this vehicle at night. I have heard several complaints about these headlights."

Anonymous, AL (2015 GMC Sierra 1500 Denali 5.3-L V8)

"Passenger side headlight went out."

Anonymous, TX (2015 GMC Sierra 1500 SLT 5.3-L V8)

"headlight output is very poor; gm will not replace - they are almost dangerous they are so dim"

Bob H., TX (2015 GMC Sierra 1500 SLT 6.2-L V8)

"Both headlights have gone out in the last few months."

Anonymous, TX (2015 GMC Sierra 1500 5.3-L V8)

"Very unhappy with performance of stock head lights - narrow field of illumination and poor light quality. Have replaced head light bulbs with 'recommended' replacements and am still dissatisfied. I do not drive the truck in the evening/night hours due to this issue."

Anonymous, IL (2015 GMC Sierra 1500 SL 5.3-L V8)
Interior lights

"All the dash lights stopped working one evening. The next morning the battery was dead. After jumping the battery, the truck worked fine and problem hasn't recurred. Took it to the shop and they couldn't find anything wrong"

Elizabeth S., AK (2015 GMC Sierra 1500 SLE 6.2-L V8)

Drive System

Driveshaft or axle, CV joint, differential, transfer case, 4WD/AWD components, driveline vibration, traction control, electronic stability control (ESC), electrical failure.

What Owners Say

4WD/AWD components

"4WD switch stopped worked - first locked in 4WD, then in 2WD and 4WD wouldn't work. Took it in to the shop; there was a service bulletin on it and it was fixed"

Elizabeth S., AK (2015 GMC Sierra 1500 SLE 6.2-L V8)

"Vehicle became stuck in 4WD. It appears to be electrical as it was fixed with a reset of the "fault""

Anonymous, MI (2015 GMC Sierra 1500 SLT 5.3-L V8)
Differential

"Rear end was replaced at 19000 miles. It has now started the low whine noise again."

Anonymous, AL (2015 GMC Sierra 1500 Denali 5.3-L V8)
Driveline vibration

"The truck has had the tires replaced twice. The differential has been repaired twice. There GM rep is working with the dealer to find a solution"

Harold A., GA (2015 GMC Sierra 1500 SLT 5.3-L V8)

""Rumble strip" type vibration when trans is 90+F degress; SHUDDER transitioning between 6-7 and 7-6 gear shifts so pronounced passengers look for an emergency exit!"

Anonymous, MI (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Vibration occurred most often at higher driving speeds, i.e. over 65mph. At times it was intense."

Anonymous, (2015 GMC Sierra 1500 SLT 6.2-L V8)

"There is a vibration that is intermittent. I have had it to the dealer several times. They have balanced the wheels and done some other things, but cannot find the cause. It occurs in the steering wheel and body at mid-speed (35-50). It is very annoying to have a new truck that does not ride as smooth as my old 1999 GMC."

Anonymous, MI (2015 GMC Sierra 1500 SLE 5.3-L V8)
Electrical failure

"Had to replace dashboard electrical switches for heat and air cond"

Robert W., OH (2015 GMC Sierra 1500 SLE 4.3-L V6)

"electrical failure caused it to be stuck in 4wd"

Anonymous, NE (2015 GMC Sierra 1500 SLE 5.3-L V8)
Stability control (ESC)

"Warning light is on"

Earl L., TX (2015 GMC Sierra 1500 SLT 5.3-L V8)

Suspension

Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.

What Owners Say

Electronic or air suspension

"One of the monitors for suspension fell off"

Gary H., MO (2015 GMC Sierra 1500 Denali 5.3-L V8)

"Cost of replqcement of shocks and struts"

Gene B., MN (2015 GMC Sierra 1500 Denali 5.3-L V8)
Shocks or struts

"Broken right front shock"

Craig E., IN (2015 GMC Sierra 1500 Denali 5.3-L V8)

"Magnetic ride control shocks started leaking at 42000 and needed to be replaced"

Anonymous, KS (2015 GMC Sierra 1500 Denali 5.3-L V8)

"front shocks leaking"

Anonymous, AB (2015 GMC Sierra 1500 Denali 5.3-L V8)

"The vehicle is only 3 years old, so out of warranty. Never driven hard yet the struts are leaking and need replacement at a cost over $2,000."

Denis B., TX (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Cost of replqcement qt 100000! $3600.00"

Gene B., MN (2015 GMC Sierra 1500 Denali 5.3-L V8)

"The Magna-ride front shocks started to leak oil and lost all ride quality. The cost of these parts were very expensive to replace. Was advise to replace front and rear shock as a set. Spend over $2500 to fix this."

Christopher T., NH (2015 GMC Sierra 1500 Denali 5.3-L V8)
Steering linkage (includes rack and pinion)

"Electric steering failed , was replaced at a total cost of 3k USD GM subsidized it so it cost us 900usd"

Richard M., NH (2015 GMC Sierra 1500 SLE 5.3-L V8)

Paint/Trim

Paint (fading, chalking, cracking, or peeling), loose interior and exterior trim or moldings, rust.

What Owners Say

Loose exterior trim or moldings

"bad leak inside mildew bad smell"

Anonymous, MA (2015 GMC Sierra 1500 SLT 5.3-L V8)
Loose interior trim or moldings

"interior door panel had a ding"

Anonymous, TX (2015 GMC Sierra 1500 Denali 6.2-L V8)

"The steering wheel cover was loose. GM decided to replace the steering wheel"

Harold A., GA (2015 GMC Sierra 1500 SLT 5.3-L V8)
Paint (fading, chalking, cracking, or peeling)

"Driver's door had hit rocker panel during assembly, causing a paint chip on the lower front door and impacted area on rocker panel. Painted front bumper easily sustains stone chips. Paint around hood latch was inadequate"

Mark K., WI (2015 GMC Sierra 1500 Denali 5.3-L V8)

"Paint had rubbed off at base of drivers door. This is not rust just wear and tear but don't feel it should have worn so much."

Anonymous, AB (2015 GMC Sierra 1500 Unsure 4.3-L V6)
Rust

"drivers side running board was rusting after only 22000 kl and gm replaced the one side"

Anonymous A., AB (2015 GMC Sierra 1500 5.3-L V8)

"although gmc put plastic in the areas road debris hit, the frame and underside is showing rust throughout."

Anonymous, OH (2015 GMC Sierra 1500 SLT 5.3-L V8)

Body Hardware

Power or manual windows, locks and latches, tailgate, hatch or trunk, doors or sliding doors, mirrors, seat controls, safety belts, sunroof, convertible top.

What Owners Say

Glass defects

"Shattering rear window without any obvious cause"

Anonymous, VT (2015 GMC Sierra 1500 Denali 6.2-L V8)
Seat belts

"recall on tensionor, fixed."

Anonymous, OH (2015 GMC Sierra 1500 SLT 5.3-L V8)
Seat controls - movement

"Drivers seat became loose and would shift slightly during cornering or stopping. Not a safety hazard but very annoying. Dealer replaced clips to start with but problem returned. Dealer then replaced seat itself - now all good."

Jack R., TX (2015 GMC Sierra 1500 SLT 6.2-L V8)
Tailgate, hatch or trunk

""easy up" and lower function stopped working"

Don M., ON (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Have a hard time opening up tailgate some times. The handle to do so is very finicky and I have to apply pressure in just the right spot to get it to open."

Anonymous, AB (2015 GMC Sierra 1500 Unsure 4.3-L V6)

Brakes

Antilock system (ABS), parking brake, master cylinder, calipers, rotors, pulsation or vibration, squeaking, brake failure or wear.

What Owners Say

Pulsation or vibration

"Minor braking problem. In the process of getting it looked at."

Anonymous, AB (2015 GMC Sierra 1500 SLE 5.3-L V8)
Regular brake failure

"My brakes would not operate correctly at low speeds but GMC issued a recall and did a software update but that didn't fix the problem so then they replaced a air pump that supplies vacuum to the brake booster and now my brakes work again."

Anonymous, GA (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Loss of power brakes when using brakes frequently with engine at low idle. Like when in line at a drive thru. A bit scary when you are used to only light push to activate brakes. Problem was due to a weak vacuum pump. Covered by GM recall. Vacuum pump was replaced by dealer at no cost to me. Only downside was I had to wait a few months for part to be available. GM had a safety recall for this problem about 9 months ago that only involved a software update. They did this but it made no difference. Being as I worked almost 50 years as a heavy equipment mechanic, I understood the problem perfectly and knew this was a smoke and mirrors fix. Eventually GM got more truthful and owned up to the problem and released the program to replace the vacuum pump. It is good now. Happy with my dealer but not impressed by how long GM tried to avoid doing the fix that almost any good mechanic would know what is really required."

Anonymous, ON (2015 GMC Sierra 1500 SL 5.3-L V8)
Rotors

"There's a clunking sound because the rotors need to be greased every so often. We were told it was a defective part on 2015 models"

Anonymous, LA (2015 GMC Sierra 1500 SLT 5.3-L V8)

Engine Major

Engine rebuild or replacement, cylinder head, head gasket, turbo or supercharger, timing chain or timing belt.

What Owners Say

Cylinder head

"Bent cylinder rod, fixed under warranty, truck was down for a week, dealer paid for car rental"

Anonymous, IL (2015 GMC Sierra 1500 SLT 5.3-L V8)
Engine rebuild or replacement

"I bent a push rod while traveling. I immediately went to the nearest GMC dealer."

Anonymous, PA (2015 GMC Sierra 1500 Denali 6.2-L V8)

"Camshaft failure. Camshaft lobes wore flat."

Anonymous, WA (2015 GMC Sierra 1500 Denali 6.2-L V8)

Exhaust

Muffler, pipes, catalytic converter, exhaust manifold, leaks.

What Owners Say

Other/unsure

"The OnStar modular went out"

James D., IN (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Motor that vibrates seat went bad."

Jon L., WA (2015 GMC Sierra 1500 Denali 6.2-L V8)

"front bumper indicator failed replaced under warranty"

Anonymous, ON (2015 GMC Sierra 1500 SLT 5.3-L V8)

Power Equipment

Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, remote engine start, alarm or security system

What Owners Say

Spark plugs or wires failure

"spark plug wire came loose and caused misfire"

James S., TX (2015 GMC Sierra 1500 SLE 5.3-L V8)

"It began running rough. I believe that they replaced spark plug wires. It was covered under warranty"

Robert C., OH (2015 GMC Sierra 1500 SLE 5.3-L V8)

Fuel System

Check engine light, sensors (includes O2 or oxygen sensor), emission control devices (includes EGR), engine computer, engine computer, fuel cap, fuel gauge/sender, fuel injection system, fuel pump, fuel leaks, stalling or hesitation.

What Owners Say

Fuel injection system

"There was a misfire and stored a code that said injector issue with fuel bar involved"

Michael M., TX (2015 GMC Sierra 1500 SLT 5.3-L V8)

"Check engine light came on. No obvious symptoms. Took it to dealership and they said two fuel injectors needed replaced."

Anonymous, (2015 GMC Sierra 1500 SLE 5.3-L V8)

Engine Minor

Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, oil leaks.

What Owners Say

Engine computer

"The engine stopped firing on all cylinders causing significant loss of power in traffic. The power did not return until I got the truck into the dealership. This happened on two occassions"

Bob N., AL (2015 GMC Sierra 1500 Denali 6.2-L V8)

Engine Cooling

Radiator, cooling fan, antifreeze leaks, water pump, thermostat, overheating.

What Owners Say

Radiator

"Dealer said radiator was cracked but we experienced no leaks in our garage. Part was no longer under warranty"

Lyn R., IA (2015 GMC Sierra 1500 SLT 6.2-L V8)
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