2003 GMC Sierra 1500 Reviews, Ratings, Prices - Consumer Reports
The Sierra full-sized pickup is competent all around. The interior is quiet and roomy, handling and braking are good for a truck. The four-door extended-cab versions are also the only such pickups with habitable rear seats. The front seats are not particularly supportive. Four-wheel-drive models offer a selectable system with a full-time mode.
Alerts
There are 4 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.
NA
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.
NA
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.
NA
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.
NA
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.
NA
Noise Noise Our expert judgment of the vehicle's interior noise level in everyday driving.
NA
Front Seat Comfort Front Seat Comfort Our judgment of how comfortable the front seat is for drivers of various heights.
NA
Rear Seat Comfort Rear Seat Comfort Our judgment of how comfortable the rear seat is for two passengers to sit across.
NA
Interior Fit and Finish Interior Fit and Finish An expert evaluation of the interior quality and craftsmanship.
NA
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.
NA
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.
NA
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.
Model Summary
The Sierra full-sized pickup is competent all around. The interior is quiet and roomy, handling and braking are good for a truck. The four-door extended-cab versions are also the only such pickups with habitable rear seats. The front seats are not particularly supportive. Four-wheel-drive models offer a selectable system with a full-time mode. The Sierra Denali is an expensive AWD model with a 6.0-liter V8 and four-wheel-steering called Quadrasteer (also available on the Heavy Duty models), which enhances maneuverability in tight spaces and improves stability while towing.
Seating
3 front, 3 rear
Drive Wheels
4WD, AWD, 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
  • 5-speed Manual
  • 4-speed Automatic
Engines Available
  • 4.3-liter V6 (200 hp)
  • 4.8-liter V8 (270 hp)
  • 5.3-liter V8 (285 hp)
  • 6-liter V8 (325 hp)
  • 6-liter V8 (300 hp)

Owner Reported Trouble Spots

The Reliability score is based on our latest subscriber survey of 2003 GMC Sierra 1500 owners. The owner comments describe problems respondents experienced with this vehicle.

Brakes

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

What Owners Say

Antilock system (ABS)

"Had to have the complete braking system replaced due to a rust problem. The ABS and 4wd sensor also failed. We did report this to GM although a known problem...solution was to spray underneath of truck off more. Driven average of 9k mi a year"

Jane L., OH (2003 GMC Sierra 1500 SLE 4.7-L V8)

"Although the brake pads still had some life left, I replaced pads and purged the entire system to completely replace the old brake fluid with fresh/new brake fluid. The reason was that the brake pedal seemed to have too much play and I use the vehicle to tow my boat"

Anonymous, CA (2003 GMC Sierra 1500 Work Truck 4.7-L V8)

"Sensors"

Anonymous, OH (2003 GMC Sierra 1500 SLE 5.3-L V8)

"I had to have the ABS control module rebuilt & a brake job from normal wear & tear"

Anonymous, TN (2003 GMC Sierra 1500 SLE 4.7-L V8)

"Still doing testing. Pedal goes almost to the floor"

J K., IN (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Sensor failure both sides front requiring hub replacement"

David R., ON (2003 GMC Sierra 1500 SL 4.3-L V6)

"Took it in because of a horrible noise and feeling on ABS Brakes"

Diana M., MI (2003 GMC Sierra 1500)
Calipers

"rear caliper hung up and caused noise and wear on pads"

Terry S., AL (2003 GMC Sierra 1500 Base 4.7-L V8)

"Stuck caliper - rear. Brake line rust through. Have had all lines replaced in the last 2 years"

Anonymous, CT (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Both front calipers seized requiring replacement"

David R., ON (2003 GMC Sierra 1500 SL 4.3-L V6)

"Due to the age of the vehicle it appears the calipers just did not work as they should do to rust , road salt etc. over the years on them ."

Patrick B., AB (2003 GMC Sierra 1500 SLE 5.3-L V8)
Normal routine brake wear

"Had a rear crossover brake line rust and split. Have replaced the brake pads and rotors,but the brake pedel is still low. Replacement was a few years ago,but I put little miles on this vehicle."

Bruce A., MA (2003 GMC Sierra 1500 6.0-L V8)

"Got 144000 mi on two sets of brakes. OEM's worked great on mixed driving. Replaced rear disc due to costs of new disc being so cheap compared to turning and replacing them next brake job. One brake cylinder failed too"

Larry C., GA (2003 GMC Sierra 1500 SLT 5.3-L V8)

"front & back ~52000 mile"

Anonymous, WI (2003 GMC Sierra 1500 SLE 6.0-L V8)

"normal wear"

Anonymous, MB (2003 GMC Sierra 1500 Base 4.3-L V6)

"I had a pulsation in the rear brakes upon stopping. Upon closer inspection it was discovered the brake rotors were warped and needed to be replaced. I had pads and rotors done at this time."

Anonymous, MO (2003 GMC Sierra 1500 SLT 5.3-L V8)
Parking brake

"The emergency brake was not holding the vehicle and needed to be adjusted. This is the first time that it had been adjusted as well as the first time I had any work done on the brakes since I purchased the vehicle in 2003"

Anonymous, CA (2003 GMC Sierra 1500 Work Truck 4.7-L V8)
Premature brake wear

"the inside pads wear a lot faster than the out side"

Anonymous, IL (2003 GMC Sierra 1500 Base 4.7-L V8)

"stuck rear caliper"

Terry S., AL (2003 GMC Sierra 1500 Base 4.7-L V8)

"I HAD THE REAR BRAKES REPLACED. AND, IN ABOUT 4 MONTH SPAN OF TIME I TOOK THE TRUCK TO ANOTHER REPAIR SHOP.. THEY DIAGNOSED THAT BRAKE FLUID WAS LEAKING INSIDE THE REAR DRUMS AND EFFECTING THE BOOT LINERS, ETC. SO, I HAD TO HAVE THE SAME JOB REPLACED. THUS I CALLED IT ' PREMATURE REPLACEMENT'"

Anonymous, AR (2003 GMC Sierra 1500 SLE 5.3-L V8)

"break lines rest and leakage, break lines burst while driving on highway (bad news). These happend twice, a year apart."

Anonymous, MA (2003 GMC Sierra 1500 SLE 5.3-L V8)
Rotors

"Brakes wore out in 30,000 miles. Twice for 66,000 mi, driven"

Robert G., MA (2003 GMC Sierra 1500 SLE 5.3-L V8)

"replaced warped rotors 3 times and all brake lines rusted out"

Anonymous, MA (2003 GMC Sierra 1500 SL 4.7-L V8)

"Same as the calipers on the truck the rotors due to wear and that they were not changed the last time the brakes were changed had to be changed out ( appears due to labour it is cheaper to change that turn and reuse like in past vehicles)."

Patrick B., AB (2003 GMC Sierra 1500 SLE 5.3-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

Gauges

"The gauge went wacky, the needle went all the way around."

Anonymous, MI (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Had to replace gages for dash. Has never worked right. Horn does not work at all. A/C cools when it wants to"

Jacki R., AL (2003 GMC Sierra 1500)

"The six gages in the Instrument panel cluster went dead. Nothing else has failed"

Johnson H., CA (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Fuel gauge & Water Temperature gauge stopped working."

Anonymous, TN (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Had to replace entire instrument panel. Some items still do not work."

Anonymous, AL (2003 GMC Sierra 1500 SLT 4.7-L V8)

"Some to the gauges, oil I think, quit working. A local repair shop rebuilt the entire gauge package at a very reasonable price. Less than $200.00."

Anonymous, CA (2003 GMC Sierra 1500 SLT 5.3-L V8)

"I had to replace gauge cluster which has been replaced before because lights were going out and certain gauges would not work. This time I was getting a check engine light because the gauge was malfunctioning. I was hoping it would fix airbag light t"

Anonymous, MO (2003 GMC Sierra 1500 SLE 5.3-L V8)

"The gauges began to fail - tachometer, speedometer and fuel gauge. Unfortunately, the sensor for the fuel gauge is in the pump - which is expensive to get to due to its location"

Patty B., YT (2003 GMC Sierra 1500 SLT 5.3-L V8)

"Low fuel light came on but there was sufficient fuel in the tank. Speedometer failed too. Replaced module. Low voltage/battery failure. Alternator failed and took battery with it"

Larry C., GA (2003 GMC Sierra 1500 SLT 5.3-L V8)

"the fuel gauge, oil pressure gauge, tach gauge and speedometer failed and had to be replaced. they all failed at different times"

Steve G., FL (2003 GMC Sierra 1500 SLE 5.3-L V8)

"did not register the correct speed"

Anonymous, NM (2003 GMC Sierra 1500 SLE 6.0-L V8)

"Cluster failed & had to be replaced"

Layne D., DE (2003 GMC Sierra 1500 5.3-L V8)

"in cold temp all gauge indicators don't work till veichle warms up including speedo"

Anonymous, MB (2003 GMC Sierra 1500 Base 4.3-L V6)
Headlights

"The daytime running lights quite working. They are supposed to come on automatically but I must turn the headlights on manually during the day"

Anonymous, AB (2003 GMC Sierra 1500 SLE 5.3-L V8)
Heated or cooled seats

"A short occurred that drained the battery and stranded me. A new battery had same issue until it was diagnosed as something with the large fuse. Still waiting to get fixed"

Ken M., WA (2003 GMC Sierra 1500 SLT 5.3-L V8)

"Drivers seat settings no longer remembered by the computer. Probably due to miles on the car"

Anonymous, CA (2003 GMC Sierra 1500 4.3-L V6)
Keyless entry

"I have had trouble with the entire ignition and keyless entry system"

James R., AL (2003 GMC Sierra 1500 4.7-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

Emission control devices (includes EGR)

"EVAP vent valve solenoid was cracked, and cause the check engine light to come on for a gross evap leak, and vent valve. I replaced the vent valve 4 months ago, and had no problems since"

Kyle S., NY (2003 GMC Sierra 1500 SLE 5.3-L V8)
Fuel injection system

"mechanic sprayed carb cleaner in throttle body and it cleared up an intermittent miss on his meter, but only temporary."

Robert M., WA (2003 GMC Sierra 1500 SLE 5.3-L V8)
Fuel pump

"quit working"

Robert Y., NJ (2003 GMC Sierra 1500 Work Truck 4.7-L V8)
Sensors (includes O2 or oxygen sensor)

"Engine Light Sporadically displays."

Anonymous, TN (2003 GMC Sierra 1500 SLE 5.3-L V8)

"engine light on then blink"

Anonymous, MD (2003 GMC Sierra 1500 SLT 5.3-L V8)

"vacuum sensor defective."

Anonymous, MA (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Failed 02 sensor"

Charles K., MN (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Tubing had to be replaced to put the vehicle in comliance"

Anonymous, CA (2003 GMC Sierra 1500 SLE 6.0-L V8)

"I have a starting issue that can not be tracked down. You never know when the truck is not going to start."

Diana M., MI (2003 GMC Sierra 1500)

Paint/Trim

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

What Owners Say

Loose interior trim or moldings

"Cover molding on passenger side of front window comes loose and will not stay up. The only thing holding it from not completely coming off is the speaker that is in it."

Anonymous, WA (2003 GMC Sierra 1500 Base 5.3-L V8)
Paint (fading, chalking, cracking, or peeling)

"paint started peeling on the roof."

Anonymous, WY (2003 GMC Sierra 1500 SL 5.3-L V8)

"paint cracking due to rust underneath paint"

Anonymous, MA (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Paint started chalking and fading at around five years old. Looks REALLY awful now! The whole truck seems to be poor quality"

Anonymous, AZ (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Slight peeling of clear coat on hood. Fixed with clear coat spray can 18 months ago. Still looking good"

David M., CA (2003 GMC Sierra 1500 SLE 5.3-L V8)
Rust

"Both front and rear chrome bumpers have rusted through in a few spots.Had a little rust over the wheel wells that I fixed."

Bruce A., MA (2003 GMC Sierra 1500 6.0-L V8)

"Rocker Panels Always Rust Out of This Model of Trucks"

Anonymous, ON (2003 GMC Sierra 1500 SLE 4.7-L V8)

"All 4 tire rims leaking tire air from rims rusting through."

Anonymous, MA (2003 GMC Sierra 1500 SLE 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

Bushings

"bushings in steering wearing, Hear loose sound"

Anonymous, NY (2003 GMC Sierra 1500 SLE 5.3-L V8)
Power steering pumps and hoses

"Loss of power steering at low speed pulling into parking spaces"

David B., CO (2003 GMC Sierra 1500 SLE 5.3-L V8)
Steering linkage (includes rack and pinion)

"Leaking of power steering fluid. Required replacement of rack and pinion"

Anonymous, NC (2003 GMC Sierra 1500 SLT 4.7-L V8)

"plastic steering sleeve required replacing twice. not a safety issue"

Tom B., TX (2003 GMC Sierra 1500 SLE 5.3-L V8)
Steering wheel vibration

"Had to replace the steering wheel column to eliminate vibration"

Anonymous, AL (2003 GMC Sierra 1500 5.3-L V8)
Wheel bearings

"Front right hub wore out, requiring it's replacement and replacement of bearings"

Anonymous, NC (2003 GMC Sierra 1500 SLT 4.7-L V8)

"The both rear hubs are worn out and cause loud noises when turning while backing up, this vehicle has four-wheel steering. This started two months ago and has progressively gotten worse."

Anonymous, (2003 GMC Sierra 1500 Denali 4.7-L V8)

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

"I live in Las Vegas, NV. As you know it gets really hot here for many months in a row every year. After about 125000 mi. the system just gave up. So I had my mech. replace everything. Works fine now. Total cost was about 1700 dollars"

Robert G., NV (2003 GMC Sierra 1500 SLT 5.3-L V8)

"Worn out clutch on AC Compressor"

Anonymous, TX (2003 GMC Sierra 1500)
Automatic climate control

"The mix no longer functions properly. You can either turn it up to 90 to get heat or way down to maybe get cooling. So, you can either roast or freeze"

Ken M., WA (2003 GMC Sierra 1500 Base 5.3-L V8)
Blower (fan) motor

"I had to replace the resistor"

Anonymous, MN (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Fan stopped working. In Tropical environment, necessary item!! Had to replace fan and regulator"

Anonymous, GU (2003 GMC Sierra 1500 SLT 5.3-L V8)
Heated or cooled seat controls

"Drivers seat heat is sketchy at best. Sometimes comes on and often doesn't."

Anonymous, WA (2003 GMC Sierra 1500 Base 5.3-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 was wearing out, with fluid leakage. Needed extensive overhaul."

Anonymous, (2003 GMC Sierra 1500 SLT 5.3-L V8)
Differential

"Vehicle was very jerky when driving slow and turning. Felt like brakes grabbing. Problem was special lubricate required for 4 wheel steering. Replaced differential lubricate and problem went away."

Anonymous, CA (2003 GMC Sierra 1500 SLE 5.3-L V8)

"REAR DIFF. FAILED"

Anonymous, MO (2003 GMC Sierra 1500 Denali 6.0-L V8)
Driveline vibration

"A howling from the front end. Not fixed yet. Likely either a front wheel bearing or CV axle"

Anonymous, AB (2003 GMC Sierra 1500 SLE 5.3-L V8)
Electrical failure

"The electronics seem to be out of wack. Perhaps this is due to age and/or millage of truck"

Jacki R., AL (2003 GMC Sierra 1500)
Transfer case

"Was leaking and needed to be replaced."

Anonymous, (2003 GMC Sierra 1500 SLT 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

"Shift from first to second delay mechanic says broken spring"

Anonymous, MB (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Shifting slowly from 1st to second gear"

Anonymous, MB (2003 GMC Sierra 1500 SLE 5.3-L V8)
Transmission leaks

"Hole in Transfer case caused by factory part and replaced with a part that won't cause a future hole."

Ken M., WA (2003 GMC Sierra 1500 Base 5.3-L V8)

"Bad hoses from trans to cooler"

Richard N., GA (2003 GMC Sierra 1500 SLE 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

Locks and latches

"Latch to tailgate was busted--you had to stick your finger in the gate and pull a metal hook to unlock it. Easy to fix, though the body guy said it was lucky they had the latch replacement in stock"

Anonymous, CA (2003 GMC Sierra 1500 SLE 4.7-L V8)
Tailgate, hatch or trunk

"the latch fell apart and the whole bottom has rusted out. There has been no salt exposure"

Anonymous, FL (2003 GMC Sierra 1500 SLT 5.3-L V8)

"Tailgate hinges complete rusted, allowing tailgate to fall free. Replacement was do-it-yourself, but unexpected. ALSO, the tailgate latch mechanism does not always work, requiring manual manipulation in order to close the tailgate"

Anonymous, CT (2003 GMC Sierra 1500 5.3-L V8)
Windows

"The previous owner had this truck sitting in a driveway, unprotected, for 10 years. All the windows were so fuzzy & blurred from weathering that they were unsafe, and subsequently replaced"

Anonymous, CA (2003 GMC Sierra 1500 SLE 4.7-L V8)

Transmission Major

Transmission rebuild or replacement, torque converter, clutch replacement.

What Owners Say

Transmission rebuild or replacement

"Lost 2nd gear, had the transmission rebuilt"

Brad M., UT (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Transmission failed with less than 25000 miles. Warranty was expired because truck was over five years old. Had to replace at our own cost"

Anonymous, AZ (2003 GMC Sierra 1500 SLE 5.3-L V8)

"Trans rebuilt 3 years ago"

Anonymous, CA (2003 GMC Sierra 1500 4.3-L V6)

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

CD player

"Had to replace entire system due to failure. Also have problem with electric door locks do not work"

Anonymous, TX (2003 GMC Sierra 1500 Work Truck 5.3-L V8)

"Wisps of electrical-smelling smoke coming from the CD player"

Anonymous, FL (2003 GMC Sierra 1500 SLE 5.3-L V8)
Display screen goes blank

"All instruments (ie. gas gauge, oil pressure, etc. stopped working. Vehicle could not be driven safely. Entire dash module had to be replaced. Expensive repair."

Anonymous, CA (2003 GMC Sierra 1500 SLE 5.3-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

"The radiator cooler let go. Had to replace it"

Bruce A., MA (2003 GMC Sierra 1500 6.0-L V8)
Squeaks or rattles

"Has been checked by 3 different mechanics and all day nothing wrong with engine, however can't figure out why it makes such a loud clang."

Anonymous, OK (2003 GMC Sierra 1500 Unsure 5.3-L V8)

Exhaust

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

What Owners Say

Other/unsure

"Airbag light constantly on. No apparent problem. Will not know for sure until wreck."

Anonymous, AL (2003 GMC Sierra 1500 SLT 4.7-L V8)

Engine Major

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

What Owners Say

Head gasket

"9000$ for a new engine"

Anonymous, CA (2003 GMC Sierra 1500 SL 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

"Truck would not start, computer was reprogrammed and that solved the problem"

Anonymous, CA (2003 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

Alternator

"Replaced due to normal wear"

Anonymous, CA (2003 GMC Sierra 1500 SLT 5.3-L V8)

Engine Cooling

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

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