2006 GMC Sierra 2500HD Review
Price Estimate: $4,922 - $8,098





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GMC Sierra 2500HD model years
GMC Sierra 2500HD types
- Regular Cab
- Crew Cab
- Extended Cab
Edmunds' Expert Review
by the Edmunds Experts
Pros
- Powerful engine lineup, multiple drivetrain configurations, substantial towing and hauling capacities.
Cons
- Spotty build quality, mediocre design and interior materials.
What’s new
For 2006, the Duramax diesel engine receives a host of power and refinement upgrades, as well as reduced emissions. The Allison automatic transmission is now a six-speed, and features a tap-shift range selection mode. The camper-style mirrors have been replaced by a folding and extending design with a built-in convex spotter glass. Trim levels and packaging have also been juggled.
Edmunds says
With its numerous powertrain and cab configurations, and stout towing and hauling capacities, the Sierra HD is a hard truck to beat for those who need maximum functionality and capability.
For sale near Columbia, SC
32 listings
- 43,475 miles
- 2 accidents, 1 owner, government vehicle
- 8'2” bed, 6l, 8cyl
- Car Guys Online (310 mi away)
- AWD/4WD
- Multi-Zone Climate C...
- Towing Hitch
- 8ft Bed
- Standard Cab
Close
Located in Crozier, VA
Call 804-479-0497 2006 GMC Sierra 2500 4x4 Dual Fuel Gas Propane Only 43K Miles One Owner James Madison University Power Liftgate Check out this super...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTHK24UX6E178693
Stock: 6E178693
Certified Pre-Owned: No
Listed since: 06-18-2025- 175,655 miles
- 1 accident, 2 owners, corporate fleet vehicle
- 8'2” bed, 6l, 8cyl
- Jason Conley Truck (344 mi away)
- AWD/4WD
- Multi-Zone Climate C...
- 8ft Bed
- Standard Cab
- 10,000lb+ Towing Cap...
Close
Located in Wheelersburg, OH
Visit Jason Conley Truck Sales online at www.jctrucksales.com to see more pictures of this vehicle or call us at 7**-5**-2*** today to schedule y...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTHK24U96E245221
Stock: 245221a
Certified Pre-Owned: No
Listed since: 09-18-2025
Vehicle overview
GMC's modern full-size pickup has been around in one form or another since the early '60s. Now into its sixth generation, the Sierra, as it's now called, boasts classic styling and a wide variety of body styles and drivetrains. A perennial competitor to the full-size offerings from Ford and Dodge, GMC positions itself as the professional grade truck in GM's lineup. Although its sales numbers are far below those of its competitors, when combined with its sister vehicle, the Chevrolet Silverado, the GM trucks sell in competitive numbers to Ford's F-Series.
Often first to market with exclusive features, the Sierra 2500HD continues that tradition by offering XM Satellite Radio and Bose audio systems. GMC trucks also offer the OnStar communications system that provides the convenience of 24-hour on-call assistance for everything from tow truck requests to dinner reservations. Combine this with attractive styling on the outside and thoughtful features on the inside, and the Sierra 2500HD presents a compelling package for anyone in the market for a no-holds-barred work truck. Solid as the heavy-duty Sierra is, it's definitely worth your while to shop around in this segment, as Ford and Dodge both have strong diesel power plants that give their trucks higher tow ratings. GM's truck is still a fine choice for use around the worksite and home, especially if you decide you don't need the grunt of diesel -- just make sure you assess your needs carefully before making a decision.
Performance & mpg
The HD's base engine is a 6.0-liter V8 rated at 300 horsepower and 360 pound-feet of torque. GMC offers two even more powerful options: an 8.1-liter V8 and the 6.6-liter Duramax turbodiesel. The 8.1-liter engine boasts an impressive 330 hp and 450 lb-ft of torque, while the Duramax diesel makes as much as 360 hp and 650 lb-ft of torque. The standard transmission for the 6.0-liter V8 is a five-speed manual with a four-speed automatic optional. The 8.1-liter V8 and Duramax diesel can be hooked up to either a six-speed manual or a heavy-duty Allison six-speed automatic. Being heavy-duty trucks, these brutes can certainly pull -- the maximum towing capacity of the 2500HD with the 6.0-liter engine is 10,500 pounds, while the 8.1-liter V8 can tow up to 12,000 pounds.
Safety
Four-wheel antilock disc brakes are standard. In frontal crash tests conducted by the National Highway Traffic Safety Administration, a Sierra earned a three-star rating (out of five) for driver protection and four stars for the front passenger. In the Insurance Institute for Highway Safety's frontal offset crash test, the Sierra was given an overall rating of "Marginal," the second lowest.
Driving
The 2500HD is a reasonably comfortable truck for everyday use, but don't expect the plush ride of its light-duty siblings. Any of the available engines provide swift acceleration and ample towing power, but the Duramax diesel is probably the best choice for those who tow heavy loads. The manual transmissions are about what you would expect in a big truck, but the automatics shift smoothly and crisply no matter how heavy the load.
Interior
Inside, Sierra buyers will find a logically laid-out interior with an easy-to-use dual-zone climate control system and clear, uncluttered gauges. Materials quality is unimpressive, and build quality, though improved over the last few years, is still behind the competition. The large cabin offers plenty of room and comfortable bucket seats.
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*The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
2006 GMC Sierra 2500HD models
The 2500HD is available in regular, extended and crew cab body styles in both two- and four-wheel drive. Short or long boxes are available except on regular cabs, which are long boxes only. There are several levels: Work Truck, SL1, SLE1, SLE2 and SLT. True to their name, Work Trucks offer only the basics, but you still get manual dual-zone air conditioning, a 40/20/40-split bench seat and ABS. SL1 models come standard with a tilt steering wheel, cruise control, an AM/FM/CD stereo, driver message center and tinted glass. SLE1 models add power windows and door locks, remote keyless entry, power-heated exterior mirrors, foglamps and a leather-wrapped steering wheel. SLE2 models provide a six-way power driver seat and an upgraded Bose stereo. Top-of-the-line SLTs add leather bucket seats with heaters, driver-seat memory and dual 10-way power adjustments, automatic climate control, power-retractable mirrors and satellite steering wheel controls.
Compare 2006 GMC Sierra 2500HD trim levels
Helpful trims summary and side-by-side comparison chart

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GMC.com
*The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
Cost to Drive
Monthly estimates based on costs in South Carolina
Not EPA tested for Sierra 2500HD Work Truck
Sierra 2500HD Work Truck
vs
$210/mo
Avg. Large Truck
Reliability
The 2006 GMC Sierra 2500HD has a 3 years / 36,000 miles basic warranty and 9 recalls. Below you’ll find our owner reviews.
Recalls
9 recalls foundChecking if a car has a recall is simple. Just type the car's VIN number into the NHTSA website (https://www.nhtsa.gov/recalls). If there's an unrepaired recall, you'll see it there.
If a recall shows up, just call your local car dealer. They'll know about the recall and will work with the car maker to fix it for free (if the recall happened within 10 years of the car being first sold).
- Recall Number:
- 09E025000
- Number of vehicles affected:
- 42540
- Defect Description:
- DOPE, INC. IS RECALLING 42,540 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
- Defect Consequence:
- DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.
- Corrective Action:
- DOPE, INC. WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE SAFETY RECALL BEGAN ON JULY 28, 2009. OWNERS MAY CONTACT DOPE, INC. AT 1-626-272-1798.
- Recall Number:
- 08V519000
- Manufactured from:
- 2005-04-01 to 2006-09-06
- Number of vehicles affected:
- 133
- Defect Description:
- MOBILITYWORKS IS RECALLING 133 MY 2005-2006 FORD E250, MY 2000, 2004-2006 E350, MY 2000, 2005 E450, MY 2005-2006 GMC 2500, GMC 3500, AND MY 2006 DODGE 2500 VANS EQUIPPED WITH RICON PLATFORM STYLE WHEELCHAIR LIFTS. THESE LIFTS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 403, "PLATFORM LIFT SYSTEMS FOR MOTOR VEHICLES." THE ANTI-STOW INTERLOCK MAY NOT DETECT THE PRESENCE OF A WHEELCHAIR OR MOBILITY AID USER. THE PRESSURE SENSING SWITCH THAT DETECTS THE PRESENCE OF WEIGHT ON THE PLATFORM WAS NOT ADJUSTED TO THE NECESSARY SENSITIVITY LEVEL. THE LIFT COULD STOW EVEN THOUGH SOMEONE OR SOMETHING IS STILL ON THE LIFT.
- Defect Consequence:
- A LIFT OCCUPANT CAN BE INJURED SHOULD THE LIFT BEGIN TO STOW UNINTENTIONALLY.
- Corrective Action:
- MOBILITYWORKS IS WORKING WITH RICON TO CORRECT THE WHEELCHAIR LIFTS FREE OF CHARGE (PLEASE SEE 07E097). OWNERS MAY CONTACT RICON AT 1-818-267-3000 OR MOBILITYWORKS AT 1-800-769-8267.
- Recall Number:
- 07E066000
- Number of vehicles affected:
- 175
- Defect Description:
- CERTAIN CEQUENT 90 DEGREE 7-WAY RIGHT ANGLE ADAPTORS SOLD BY DISTRIBUTORS IN TOW PACKAGES FOR AFTERMARKET SALES TO TOW 5TH WHEEL RV TRAVEL TRAILERS. DUE TO INCORRECT WIRING OF THE HARNESS, THE TRAILER LIGHTS MAY NOT OPERATE PROPERLY.
- Defect Consequence:
- IF THE TRAILER LIGHTS ARE NOT WORKING PROPERLY, A VEHICLE CRASH CAN OCCUR.
- Corrective Action:
- ALL OF THE DEFECTIVE TOW PACKAGES ARE STILL AT THE DISTRIBUTOR LEVEL AND HAVE NOT BEEN SOLD TO ANY CONSUMERS.
- Recall Number:
- 06V307000
- Manufacturer Recall Number:
- 06079
- Manufactured from:
- 2006-04-01 to 2006-05-31
- Number of vehicles affected:
- 3227
- Defect Description:
- CERTAIN SPORT UTILITY VEHICLES AND TRUCKS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS." THESE VEHICLES HAVE AN INCOMPLETE TIRE RIM DESIGNATION ON THE CERTIFICATION/TIRE LABEL LOCATED ON THE DRIVER'S DOOR EDGE. IN ADDITION, THE LABEL MAY ALSO BE MISSING THE TIRE LOAD RATING ON THE LABEL. ALTHOUGH THIS INFORMATION IS NOT REQUIRED BY THE STANDARD, IF A TIRE OF A LESSER LOAD RATING IS INSTALLED, THE TIRE MAY NOT BE ABLE TO SUSTAIN THE LOADS ENCOUNTERED DURING USE.
- Defect Consequence:
- IF A CUSTOMER REPLACES A WHEEL AND ONLY RELIES ON THE RIM SIZE DESIGNATION THAT IS INDICATED ON THE LABEL, A WHEEL THAT IS OF A DIFFERENT RIM CONTOUR DESIGNATION MAY BE INSTALLED. IT MAY BE DIFFICULT OR IMPOSSIBLE TO MOUNT THE TIRE ON A WHEEL WITH THE WRONG CONTOUR. IF THE TIRE IS MOUNTED ON THE WHEEL WITH THE WRONG CONTOUR, THE WHEEL AND TIRE MAY NOT PERFORM AS INTENDED, WHICH COULD INCREASE THE RISK OF A CRASH.
- Corrective Action:
- A LABEL THAT WILL CORRECT THE LABEL ORIGINALLY INSTALLED WILL BE MAILED TO CONSUMERS ALONG WITH INSTALLATION INSTRUCTIONS. THE CUSTOMER WILL HAVE THE OPTION FOR DEALERS TO INSTALL THE LABEL. THE RECALL BEGAON ON NOVEMBER 7, 2006. OWNERS SHOULD CONTACT CADILLAC AT 1-866-982-2239, CHEVROLET AT 1-800-630-2438, AND GMC TRUCKS AT 1-866-996-9463.
- Recall Number:
- 06V289000
- Manufacturer Recall Number:
- 06080
- Manufactured from:
- 2005-05-01 to 2005-04-30
- Number of vehicles affected:
- 38439
- Defect Description:
- ON CERTAIN TRUCKS EQUIPPED WITH AN 8.1L V8 (RPO L8-VIN G) ENGINE HAVE A CONDITION IN WHICH THE ENGINE FUEL RAIL PULSE DAMPER RETAINER CLIP MAY FRACTURE RESULTING IN INADEQUATE RETENTION OF THE DAMPER.
- Defect Consequence:
- IF THE DAMPER COMES LOOSE, A FUEL LEAK MAY RESULT. FUEL LEAKAGE, IN THE PRESENCE OF AN IGNITION SOURCE, COULD RESULT IN A FIRE.
- Corrective Action:
- DEALERS WILL REPLACE THE ENGINE FUEL RAIL PULSE DAMPER RETAINER CLIP FREE OF CHARGE. THE RECALL BEGAN ON AUGUST 31, 2006. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 AND GMC TRUCKS AT 1-866-996-9463.
- Recall Number:
- 06E050000
- Number of vehicles affected:
- 6800
- Defect Description:
- CERTAIN FEDERAL-MOGUL NATIONAL AND CARQUEST AFTERMARKET HUB ASSEMBLIES, P/N 515058, SOLD FOR USE ON 2001-2006 GENERAL MOTORS 1500 AND 2500 4WD TRUCKS. ON THE SUBJECT HUB ASSEMBLIES, THE ABS SENSOR CORD DEPARTS FROM THE HUB ASSEMBLY AT A 90 DEGREE ANGLE. AS A RESULT, THERE IS A FIT ISSUE WITH THE BRAKE ROTOR DUST SHIELD INTERFERING WITH THE ABS SENSOR CORD. IF THE HUB ASSEMBLY IS INSTALLED DESPITE THIS INTERFERENCE, THE GAP BETWEEN THE ABS SENSOR AND THE TONE WHEEL MAY BE ALTERED. THIS MAY WEAKEN THE OUTPUT OF THE ABS SENSOR. DIMINISHED OUTPUT COULD RESULT IN AN UNWANTED ABS ACTIVATION AT LOW SPEEDS AND STOPPING DISTANCE COULD BE AFFECTED.
- Defect Consequence:
- IF STOPPING DISTANCE IS LIMITED, A VEHICLE CRASH COULD OCCUR.
- Corrective Action:
- FEDERAL-MOGUL WILL NOTIFY ITS OWNERS AND WILL EITHER CREDIT THE CUSTOMERS ACCOUNT OR REPLACE THE UNIT. THE RECALL IS EXPECTED TO BEGIN DURING JUNE 2006. OWNERS CAN CONTACT FEDERAL-MOGUL CUSTOMER SERVICE AT 1-800-563-8507 EXT 3530.
- Recall Number:
- 06E010000
- Number of vehicles affected:
- 1360
- Defect Description:
- CERTAIN FABTECH AFTERMARKET REPLACEMENT PITMAN ARMS, P/NOS. FTS71000 AND FTS71001, INSTALLED FOR USE ON CERTAIN 2001-2006 GM C/K 2500 PICK UP TRUCKS AND SPORT UTILITY VEHICLES. THE PIN LOCATED INSIDE THE PITMAN ARM CAN SHEAR OFF DUE TO A REVERSE BENDING FATIGUE CONDITION, RESULTING IN A TOTAL LOSS OF STEERING CONTROL.
- Defect Consequence:
- LOSS OF STEERING CONTROL COULD LEAD TO A VEHICLE CRASH WITH POTENTIAL INJURY OR DEATH.
- Corrective Action:
- FABTECH WILL NOTIFY OWNERS AND REPLACE THE PITMAN AND IDLER ARMS FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING FEBRUARY 2006. OWNERS MAY CONTACT FABTECH AT 909-597-7800.
- Recall Number:
- 05V552000
- Manufacturer Recall Number:
- 05109
- Manufactured from:
- 2005-09-01 to 2005-09-07
- Number of vehicles affected:
- 32068
- Defect Description:
- CERTAIN TRUCKS AND SPORT UTILITY VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS." THESE VEHICLES WERE SHIPPED WITH TIRE AND LOADING INFORMATION LABELS LISTING AN INACCCURATE VEHICLE CAPACITY WEIGHT.
- Defect Consequence:
- A MISPRINTED LABEL COULD LEAD TO IMPROPER VEHICLE LOADING SPECIFICATIONS OR TIRE INFLATION WHICH COULD RESULT IN A TIRE FAILURE, INCREASING THE RISK OF A CRASH.
- Corrective Action:
- OWNERS WILL BE PROVIDED WITH CORRECTED LABELS AND INSTALLATION INSTRUCTIONS. AT THE CUSTOMER'S OPTION, A DEALER CAN INSTALL THE LABEL FOR THEM. THE RECALL BEGAN ON MARCH 31, 2006. OWNERS MAY CONTACT BUICK AT 1-866-608-8080, CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, HUMMER AT 1-800-732-5493, PONTIAC AT 1-800-620-7668, SATURN AT 1-800-972-8876, OR ISUZU AT 1-800-255-6727.
- Recall Number:
- 05V455000
- Manufacturer Recall Number:
- 05086
- Manufactured from:
- 2005-07-01 to 2005-08-31
- Number of vehicles affected:
- 123592
- Defect Description:
- CERTAIN PASSENGER VEHICLES MAY HAVE BEEN BUILT WITH A POWER STEERING HOSE THAT IS NOT TO SPECIFICATION. UNDER EXTREME STEERING MANEUVERS, SUCH AS TURNING THE STEERING WHEEL FULLY TO THE LEFT OR RIGHT WHILE BRAKING, THE HOSE MAY FRACTURE AND LEAK FLUID.
- Defect Consequence:
- IF THIS WERE TO OCCUR, POWER STEERING ASSIST WOULD BE LOST AND INCREASED STEERING EFFORT WOULD BE REQUIRED. ON VEHICLES EQUIPPED WITH HYDRO-BOOST POWER BRAKES, IT COULD ALSO RESULT IN LOSS OF POWER BRAKE ASSIST AND INCREASED BRAKING EFFORT WOULD BE REQUIRED. IF THE POWER STEERING FLUID SPRAY WERE TO SPRAY ONTO HOT ENGINE PARTS, AN ENGINE COMPARTMENT FIRE COULD OCCUR.
- Corrective Action:
- DEALERS WILL INSPECT THE POWER STEERING HOSE(S) FOR TWO SUSPECT DATE CODES AND REPLACE THEM IF REQUIRED. THE RECALL WILL BEGIN ON OCTOBER 14, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, BUICK AT 1-866-608-8080, CADILLAC AT 1-866-982-2339, ISUZU AT 1-800-255-6727, OR HUMMER AT 1-800-732-5493.
Warranty
3 years / 36,000 miles Basic Warranty- Basic Warranty
- 3 years / 36,000 miles
- Drivetrain Warranty
- 3 years / 36,000 miles
- Rust Warranty
- 6 years / 100,000 miles
- Roadside assistance Warranty
- 3 years / 36,000 miles
GMC Sierra 2500HD Owner Reviews
Most Helpful Owner Reviews
Trending topics
Great truck
4.25 out of 5 starsterry, 06/16/2010
2005 GMC Sierra 2500HD 4dr Extended Cab SLT 4WD SB (6.0L 8cyl 4A)
I purchased this truck in April 2010. My first gmc. I love it. It has the duramax & Allison combo. Very powerful. It pulls beyond what I expected. I got this truck used with 81 thousand miles. Everyone tells me its just getting broke in. So far I like everything about this truck.
05' 6.6 V8
5 out of 5 starstroyman89, 12/12/2008
2005 GMC Sierra 2500HD 4dr Crew Cab SLT Rwd SB (6.0L 8cyl 4A)
Very nice truck. Lots of power for pulling my 35 foot race trailer. Good on fuel about 21 highway 18 in town. I put the banks 6 gun chip in it. Very fast. Sounds good and has lots of power
The time tested truth
5 out of 5 starsdplind, 09/25/2010
2005 GMC Sierra 2500HD 4dr Extended Cab SLT 4WD SB (6.0L 8cyl 4A)
Ok let's start out that I have owned them all and I have owned a lot of trucks. My business is repairing trucks of all sizes and brands for large and small owners. I drive what I don't have to fix! Period! The GMC gives me power to pull my toy hauler and comfort on the long vacations. looks great and never lets me down
Excellent family recreation truck
4.88 out of 5 starsirideharley, 06/29/2009
2006 GMC Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 4A)
Was considering the Dodge Cummins for it's tough reputation but couldn't swallow the tight back seat for a growing family. A friend had the Chevy Duramax and I haven't looked back since. The GMC Duramax and 6 speed Allison tranny are incredible. Quiet ride, plenty of room in the back seat, power a plenty to pull the bass boat with a camper on top. With or without a load, city and hgwy … driving we still average 18 mpg, and at least temporarily diesel is cheaper than unleaded in my neck of the woods. Absolutely no buyers remorse with this truck. Two thumbs up all around.
We have a limited number of reviews for the 2006 GMC Sierra 2500HD, so we've included reviews for other years of the Sierra 2500HD since its last redesign.
2006 Sierra 2500HD Highlights
Regular Cab
Work Truck
Base MSRP Excludes Destination Fee | $21,825 |
---|---|
Engine Type | Gas |
Seating | 3 seats |
rear wheel drive | |
Max Towing Capacity | 12,000 lbs. |
Warranty | 3 years / 36,000 miles |
Safety
Key safety features on the Sierra 2500HD include:
- Alarm
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