2004 GMC Sierra 2500HD Reviews, Ratings, Prices - Consumer Reports
These trucks are much stiffer and ride less comfortably than the standard 1500 (1/2 ton). They are designed for hard work and a 3/4 ton capacity. The ride is bouncy but the available engines include a relatively refined, Isuzu-developed 6.6-liter turbodiesl V8 and a huge 8.1-liter, 340-hp V8.
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.
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
NA
2010
NA
2011
2012
NA
2013
2014
NA
2015
2016
2017
2018
2019
2020
2021
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.
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
NA
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
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. ESC standard from 2011.
Model Summary
These trucks are much stiffer and ride less comfortably than the standard 1500 (1/2 ton). They are designed for hard work and a 3/4 ton capacity. The ride is bouncy but the available engines include a relatively refined, Isuzu-developed 6.6-liter turbodiesl V8 and a huge 8.1-liter, 340-hp V8.
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
  • 5-speed Manual
  • 5-speed Automatic
  • 4-speed Automatic
  • 6-speed Manual
Engines Available
  • 6-liter V8 (300 hp)
  • 6.6-liter V8 turbodiesel (300 hp)
  • 8.1-liter V8 (340 hp)

Owner Reported Trouble Spots

The Reliability score is based on our latest subscriber survey of 2004 GMC Sierra 2500HD owners. The owner comments describe problems respondents experienced with this vehicle.

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

Body control module

"Electric window failed"

Anonymous, WA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Cruise control

"needed a new cintrol module"

Anonymous, MO (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Exterior lights (other than headlights)

"Had to replace both frond driving light bulbs as well as the right turn signal bulb"

James K., FL (2004 GMC Sierra 2500HD SLT 6.0-L V8)

"RH Driving lamp failure - replaced"

Ronal M., CA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Some exterior lights quit working on occasion and the bulbs are fine. So intermittent that mechanic can not find problem."

Anonymous, (2004 GMC Sierra 2500HD SLT 6.0-L V8)
Gauges

"Guages quit working properly about 5 years after purchase. This is a common problem on trucks in this body style"

Anonymous, TN (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"speedometer broke"

Anonymous, LA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"Instrument panel cluster - speedometer and oil pressure gauge failure. Rebuilt by 3rd party shop"

Ronal M., CA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Heat guage, was recall but mine was out of date wnen it broke, Gnc wanted $800 TO FIX IT"

Anonymous, AZ (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"Electronics in GMC don't seem to be the best , could use improvement it seems you fix one thing and then it is something else"

Joe H., AB (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Headlights

"Dimmer switch works seldom to intermittent. Headlights are only on when in low beam. Switching to hi-beam and there are no lights at all. GM says a repair is 1,100 dollars. Seems to be fairly common problem that should have had a recall but hasnt"

Anonymous, AB (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"Headlight switch not working"

Joe H., AB (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Heated or cooled seats

"Passenger base heater will cause heaters to turn off back rest heater works fine"

Anonymous, BC (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"Repairing seat heater sensors will cost $2500. They haven't worked since purchased on 2015."

Anonymous, IN (2004 GMC Sierra 2500HD SLT 6.0-L V8)

"Occasionally the heat comes on at random times without touching the control button. Not repaired to date since it is random."

Anonymous, (2004 GMC Sierra 2500HD SLT 6.0-L V8)
Interior lights

"there was a negative ground fault that caused the lights to flicker and took more time to fix than expected"

Anonymous, AB (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"lights went out in half of the dash and we were told we would have to replace the entire dashboard instead of just fixing a light to the tune of $500.00"

Julie K., ID (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Warning lights

"Also when I bought the truck, the blinkers would sometimes engage the four-ways instead of just the blinkers on that side due to a faulty switch which the dealer agreed to fix for half price, since I bought it without warranty but I argued that they should have found those problems since it took me a day or two to find them myself. Fixing the blinkers and climate control cost me $200, which was half what it would have been normally."

Christopher S., WI (2004 GMC Sierra 2500HD SLE 6.0-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

"None of the A/C systems on our GMC/CHEVROLET vehicles has worked or been financially worth repairing after about 5-7 years old. We drive windows open in the summer."

Anonymous, MA (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"No air conditioning in 2019. Had to replace entire system."

Anonymous, IN (2004 GMC Sierra 2500HD SLT 6.0-L V8)
Automatic climate control

"Intermittent problem where the blower direction or temperature changes by itself or is incapable of being regulated."

Anonymous, MA (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"blowing hot air out the driver's side vents regardless of temperature setting"

Anonymous, ON (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"Front passenger seat gets only hot air--the A/C works great on driver side but the internal part of the vents on passenger side are stuck/broken so that hot air off the engine is all the passenger side gets"

Diane M., CA (2004 GMC Sierra 2500HD 6.6-L V8 diesel)

"The dual climate control temperature actuator quit working along with the inside air actuator"

James B., FL (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Two actuators have gone out. One controlled the driver and passenger designation, the other controlled the outside air coming into the cabin"

Anonymous, FL (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Turns of heat on driver side in cold weather and turns of AC and turns on heat at times in the summer"

Anonymous, TN (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Blower (fan) motor

"I initially had just 1 speed go our on my blower fan. About 4 months later, none of the 5 speeds would work. Replaced Solenoid to blower fan and corrected problem. Watched a youtube video to diagnose & repair."

Dale T., OR (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"It wore-out and I replaced it myself."

John R., CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"Fan switch has quit working at least two times. Brake line split"

Jesse W., DE (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Simply wore out required replacement"

Anonymous, CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Heater system

"When I bought it with 106000 miles, it took me a couple days to notice that the heater control wouldn't switch; it only blew on the windshield (defrost) no matter where I turned it. The dealer agreed to fix it for half price. It was simply a broken control module."

Christopher S., WI (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Refrigerant leaks

"The A/C system lost it's freon about 3 years ago. The first 2 years, I would recharge it and would last the entire summer. This year it only lasted a couple weeks. I have not taken it in yet to get repaired but will not be adding any more freon until lead is repaired."

Dale T., OR (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"The system has a leak that I have yet to have repaired. Recharged it myself last year and held for the summer, but has leaked out again for this year."

Dale T., OR (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Air Conditioning stopped working, blew hot air. Leak down test was performed, system held pressure for 30 minutes. Refrigerant was replaced, Air conditioning is working again"

Will R., CA (2004 GMC Sierra 2500HD 6.6-L V8 diesel)

Brakes

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

What Owners Say

Antilock system (ABS)

"The ABS warning light came on and could not be fixed by cleaning the ABS sensors; had to replace both front wheel bearings ($560 for parts)"

Kevin K., MI (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"Some type of sensor failed and had to be replaced on the ABS system. Warning lights on dash came on"

Anonymous, CA (2004 GMC Sierra 2500HD 6.6-L V8 diesel)

"speed sensor needed replaced. all brake lines rusted out and had to be replaced"

Karl B., PA (2004 GMC Sierra 2500HD Base 6.0-L V8)
Calipers

"Old and rusted. Break lines rotted out"

Maurice B., ME (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Parking brake

"The braking cable is too loose to hold the truck in place"

Anonymous, MO (2004 GMC Sierra 2500HD SLT 6.0-L V8)

"had to replace parking brake cables twice in 50,000 miles"

Karl B., PA (2004 GMC Sierra 2500HD Base 6.0-L V8)
Premature brake wear

"Rear axle brakes rusted, wore out prematurely, while the front brakes remain excellent and unaffected"

Anonymous, MD (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"all the brake lines rusted and needed replacing also the rear brake rotors need replacing every 1 or 2 years from deterating rust"

Anonymous, PA (2004 GMC Sierra 2500HD SLT 6.0-L V8)
Regular brake failure

"This is the second time I have had the brake lines replaced, which seems excessive for 125,000 miles. In fairness, the first time replacement used a poor grade of brake line but I wasn't given a choice. The last time I opted for a premium quality line, but this is an expensive repair ($800)"

Kevin K., MI (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"Towing 11,000 lb trailer, brake pedal went to floor on stop. Used trailer brakes to stop. Line had rusted through. Dealer said that it was very common. $1,300 to replace lines at independent shop. $3,500 dealer estimate"

Jesse W., DE (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"brake line failed and had to be towed to repair facility."

Anonymous, MI (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Rotors

"Rear rotors rusted, ruined the pads, required replacement of rotors and pads on both rear wheels"

Anonymous, MD (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"Rotors old needed to be replaced"

Anonymous, BC (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"rear rotors need replacing every 1-2 years just from chunks of rust braking off"

Anonymous, PA (2004 GMC Sierra 2500HD SLT 6.0-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

Power steering leaks

"This leak and the 2 front wheel "hub" instability along with the "gauge cluster ism being fixed as I write this. The total repair cost , including state tas will be approx. $2530.00. I have not experienced problems earlier and must accept the fact th"

Walter S., WA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"had new hose put on in 2019"

Anonymous, KS (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Power steering pumps and hoses

"Power steering hose leaking; had all hoses replaced"

James B., CA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)
Steering linkage (includes rack and pinion)

"The steering shaft coupling (steering wheel to steering sector) froze up causing excessive noise and vibration in the steering wheel. Also had to readjust steering sector to remove excessive play"

Richard M., FL (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"End of sterring column, mechanic says th I s happens all the time, on this MODEL. Cost 380 to get fixed, Only had 14000 mikes on truck"

Anonymous, AZ (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"a knock nose , had tire rods replace"

Tom C., MA (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Steering wheel vibration

"Loose lower steering shaft, rattled"

Anonymous, WA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Tie rods

"On all of our GMC and CHEVROLET trucks, we own several, we have had to replace the tie rods, ball joint and linkage over the years. On some of the vehicles it has been more than once."

Anonymous, MA (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Wheel bearings

"Had to replace front wheel bearings."

Anonymous, WA (2004 GMC Sierra 2500HD 6.6-L V8 diesel)

"Both front wheel bearings were faulty within first year. The dealer ignored my complaints about uneven tire wear or alignment problems until the warrantee had expired. When I took the truck to an independent repair shop the front wheel bearing on"

Richard M., FL (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

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

"With only 51,000 actual miles the transfer case encoder motor and transfer case control module - programmed moduleb failed and had to be replaced at a cost of $945.00"

Kevin K., MI (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"While in the middle of a 35 mile dirt road in Death Valley, I got a warning message, "Service 4 WD soon." Scary. Turned out is was a bad contact in the switch that controls the 4 WD/2 WD. Cost $300.00"

James B., CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"several time 4 wheel drive would suddenly stop working and mechanic could not find problem or replicate the problem"

Clayton G., NY (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Driveline vibration

"I have a vibration when driving between 45-60 mph. I haven't found anyone that can figure it out."

Anonymous, MA (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Driveshaft or axle

"Right & left front hubs and bearings had to be replaced. $1500.00"

James B., CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Electrical failure

"The vent selector motor stopped working so could not change from floor, dash, and defrost."

John R., CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"speedometer needle became very erratic. At 25mph it was on 75 mph. Sometimes o.k. but a wild card every time I drive. Showed up only recently. Unfortunately this mis oart of a "cluster of gauges", everything else fine but this is a $615.00 fix incl l"

Walter S., WA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Motors that switch the outlet mode , eg: from defrost to floor to dash, and also temperature control"

Anonymous, CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Transfer case

"Rear bearing disintegration due to failure in oil pump"

Debra W., MA (2004 GMC Sierra 2500HD 8.1-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)

"EGR failed. Had to be replaced"

Anonymous, CA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)
Fuel injection system

"For the second time since we purchased the vehicle, the fuel injectors failed and had to replace all eight injectors"

Anonymous, CA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"2 cracked fuel injectors"

Anonymous, FL (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"Defective injectors! Covered by a Service Bulliten. Exhast blew Blue Smoke badly!"

Anonymous, CO (2004 GMC Sierra 2500HD 6.6-L V8 diesel)
Fuel pump

"Fuel pump quit. Shop told me how to prime it so I could get to the shop. Shop rebuilt pump ( replaced O-rings.)"

James B., CA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Manual pump needed replacing it was leaking and engine wouldn't start"

Anonymous, CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

Transmission Minor

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

What Owners Say

Coolers and lines

"Replaced the oil and transmission cooler lines that were rusting through; an expensive repair costing approximately $700.00."

Kevin K., MI (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"rusted out fuel lines & fuel cooler"

John K., MA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Slipping transmission

"would not shift into 4 wheel drive"

Anonymous, AB (2004 GMC Sierra 2500HD 6.0-L V8)
Transmission leaks

"Transfer case wore thru because of poor design in fastening the internal pump"

John K., MA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"My leaks were hard to find and took many trips to my mechanic to fix"

Kathleen S., CA (2004 GMC Sierra 2500HD 6.0-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

CD player

"The CD player would not load or eject cds."

Anonymous, (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"to swap out a CD player/radio a person must go back to GC to have them program the unit to the vehicle VIN number. This costs more than the used replacement unit I got. I ended up replacing the CD portion only as the radio is the only part requiring GMC intervention."

Anonymous, AB (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"Cd player will not eject"

James B., FL (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"A CD is stuck in the player. Lowest estimate so far, is $750.00 to replace the radio/cd player."

Anonymous, FL (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)
Speakers

"front speakers stopped working and cd player jammed; front speakers work intermittently; rear speakers still work"

R G., CA (2004 GMC Sierra 2500HD SLE 6.0-L V8)

Body Integrity

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

What Owners Say

Squeaks or rattles

"Back seat rattle when in up position"

Anonymous, CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"rattle in steering column when driving on rough roads"

Anonymous, IN (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Wind noise

"Wind noise around doors"

Anonymous, CA (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

Engine Cooling

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

What Owners Say

Overheating

"I have never had any problems with overheating before but it has overheated twice in the last 5 months, both times when I was towing my travel trailer. Overheating of both the engine coolant and the transmission"

Scott W., OR (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Water pump

"Experienced slow loss of coolant. Because of location of water pump, it took two trips to the mechanic to diagnose. Due to the location of the water pump, it was an 8 hour job to replace. Location required starter removal to access and replace, and lower hose assembly (spider type of configuration) was quite difficult to replace."

Anonymous, CA (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Water pump leak. Easy and inexpensive repair"

Anonymous, AK (2004 GMC Sierra 2500HD SLT 6.0-L V8)

Paint/Trim

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

What Owners Say

Rust

"The cab rockers are severely rusting out on both sides."

Anonymous, (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"The door sills on both sides are rusting through and will be too expensive to repair."

Anonymous, AB (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

Transmission Major

Transmission rebuild or replacement, torque converter, clutch replacement.

What Owners Say

Transmission rebuild or replacement

"flywheel bolt came loose and damaged housing and oil pan"

Anonymous, FL (2004 GMC Sierra 2500HD SLE 6.0-L V8)

"Needed significant tranny repairs before 200k miles"

Monica P., ND (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

Engine Major

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

What Owners Say

Engine rebuild or replacement

"check engine warning on; its reason could not be determined so a remanufactured engine installed"

R G., CA (2004 GMC Sierra 2500HD SLE 6.0-L V8)
Head gasket

"head gasket failed. known weak are in second gen duramax engine"

Anonymous, CO (2004 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

Exhaust

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

What Owners Say

Catalytic converter

"stopped up"

Anonymous, KS (2004 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

Engine Minor

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

What Owners Say

Fuel leaks

"problems with rust , fuel injector,s rusted out replace aii"

Tom C., MA (2004 GMC Sierra 2500HD SLE 6.0-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.

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

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