2008 GMC Sierra 2500HD Reviews, Ratings, Prices - Consumer Reports
Like the Chevrolet Silverado, the heavy-duty version of the Sierra has a stiff ride and lacks the selectable 4WD system and stability control. The 2500 and 3500 HD models are offered in two- and four-wheel drive as well as the dual rear-wheel setup known as a ¿dually.' Three bed configurations are available: a six-foot, six-inch standard; eight-foot long; and the Dually.
Alerts
There are 3 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
Like the Chevrolet Silverado, the heavy-duty version of the Sierra has a stiff ride and lacks the selectable 4WD system and stability control. The 2500 and 3500 HD models are offered in two- and four-wheel drive as well as the dual rear-wheel setup known as a ¿dually.' Three bed configurations are available: a six-foot, six-inch standard; eight-foot long; and the Dually. The standard engine is a 353-hp, 6.0-liter V8, and a 365-hp, 6.6-liter turbodiesel that delivers 660 foot-pounds of torque is also available. It can haul up to 2,200 pounds of payload and tow a heavy trailer, and it returned 13 mpg overall in our tests. The engine is punchy and not too noisy, and the Allison-sourced six-speed automatic transmission is smooth.
Seating
2 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
  • 6-speed Automatic
Engines Available
  • 6-liter V8 (353 hp)
  • 6.6-liter V8 turbodiesel (365 hp)

Owner Reported Trouble Spots

The Reliability score is based on our latest subscriber survey of 2008 GMC Sierra 2500HD owners. The owner comments describe problems respondents experienced with this vehicle.

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)

"Diesel exhaust filter depleted causing replacement"

Anonymous, AZ (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Fuel gauge/sender

"Fuel level sensor failed & had to be replaced"

Warren K., WA (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Fuel pump

"the primary fuel pump"

Anonymous, CA (2008 GMC Sierra 2500HD 6.6-L V8 diesel)

"developed a leak which caused difficulty in starting the engine. Whole fuel pump unit had to be replaced"

Anonymous, CO (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Sensors (includes O2 or oxygen sensor)

"My fuel pressure relief valve was faulty from the time the truck was brand new. It was a common problem, due to a bad design of the part. GM did not issue a recall and I finally was able to cap the valve, as a suitable replacement was not available"

Erin E., NM (2008 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Replaced once already and needs replacing again"

Anonymous, AB (2008 GMC Sierra 2500HD SLT 6.0-L V8)

Brakes

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

What Owners Say

Normal routine brake wear

"Rakes wear out after 100000 miles, so I replaced them"

Anonymous, ID (2008 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"This is the first time that the brake pads, rotors and calipers needed to be replaced"

Anonymous, BC (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"During regular servicing break wear was noticed so I had breaks replaced."

Anonymous, MB (2008 GMC Sierra 2500HD SLE 6.6-L V8 diesel)
Pulsation or vibration

"Started almost immediately the vibration when depressing the petal and a jerky grab have had it looked into by the dealer who could not replicate it"

Anonymous, (2008 GMC Sierra 2500HD Unsure 6.6-L V8 diesel)
Rotors

"Replaced rotors with break pads rather than resurfacing. Not much difference in price."

Anonymous, MB (2008 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

Exhaust

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

What Owners Say

Exhaust leaks

"Bolts connecting exhaust pipe together broke for the second time."

Anonymous, MB (2008 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Gasket failure at flange due to bolt failure the bolts are over stressed for what they do"

Walter M., MA (2008 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

"Bolts holding the exhaust pipes together broke for the second time. I believe that the dealer service shop that repaired them the first time did not do a proper repair & I had them repaired at a private shop the second time."

Anonymous, MB (2008 GMC Sierra 2500HD SLE 6.6-L V8 diesel)
Pipes

"Flange bolts break and the muffler assemble starts to drop down"

Walter M., MA (2008 GMC Sierra 2500HD SLE 6.6-L V8 diesel)

Paint/Trim

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

What Owners Say

Paint (fading, chalking, cracking, or peeling)

"Paint fading/cracking/chipping/peeling due to the same moisture concern that causes the rust for these trucks around and above the rear wheel well areas."

James W., GA (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Rust

"Within and around the rear wheel wells"

Anonymous, AB (2008 GMC Sierra 2500HD SLE 6.0-L V8)

"All these GMC trucks in a range around this year rust terribly around and above the rear wheel well areas."

James W., GA (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

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

"One power steering hose leaked at fitting joint."

Anonymous, AZ (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Wheel bearings

"Right front bearing hub, wore out and making noise. Replaced"

Anonymous, AZ (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

"front right wheel bearing failed"

Anonymous, AZ (2008 GMC Sierra 2500HD SLT 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

"Four-wheel drive ceased to function, and was repaired by the dealer."

Thomas C., VT (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Differential

"Gears in differential basically blew up. In fairness I should mention that this truck is mainly used for towing heavy trailers."

Anonymous, WA (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

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

"Clutch failed"

Anonymous, CA (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)
Refrigerant leaks

"Refrigerant hose leaked. I had it replaced and have had no further issues."

Anonymous, TX (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

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

Keyless entry

"Driver door want unlock"

J P., AL (2008 GMC Sierra 2500HD 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

"Truck developed a leak in one of the transmission cooler lines. The replaced all three lines"

Anonymous, CO (2008 GMC Sierra 2500HD SLT 6.6-L V8 diesel)

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

"Glow plug failure"

Anonymous, GA (2008 GMC Sierra 2500HD SLE 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

"valves went at 177,000klms (109,000miles). so I decided to replace the engine as the replacement cost was close to a valve job cost. warranty from GMC was to 100,000miles. this should have been a warranty thing. oil changes were done frequently (every 5,000klm)"

Carmine D., ON (2008 GMC Sierra 2500HD SLE 6.0-L V8)

Engine Minor

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

What Owners Say

Oil leaks

"small drips on garage floor"

Richard R., SD (2008 GMC Sierra 2500HD 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.

Engine Cooling

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

Body Integrity

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

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.

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