2006 GMC Sierra 2500HD Review | Edmunds.com

2006 GMC Sierra 2500HD

GMC Sierra 2500HD Features and Specs

Features & Specs

  • Engine 6.0 L V 8-cylinder
  • Drivetrain Rear Wheel Drive
  • Transmission 5-speed Manual
  • Horse Power 300 hp @ 4400 rpm
  • Fuel Economy 0/0 mpg
  • Bluetooth No
  • Navigation No
  • Heated Seats No

Review of the 2006 GMC Sierra 2500HD

  • 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.

  • Safety
  • 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

    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 The camper-style mirrors have been replaced by a folding and extending design with a built-in convex spotter glass.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.

What Others Are Saying

Customer Reviews

  Average Consumer Rating (19 total reviews)  |  Write a Review

2 of 2 people found this review helpful

2006 2500hd duramax

by on
Vehicle: 2006 GMC Sierra 2500HD SL1 4dr Crew Cab 4WD SB (6.0L 8cyl 4A)

2nd Duramax, had a 2002. Good truck still original brakes at 56k miles. Interior has held up well, get the leather if possible. Engine and trans bullet proof. I tow 10,000 lb camper and boats at 70 MPH all the way to Florida from Texas. Debating going back to gas engine do not tow as much these days. Great truck overall.




Great truck!

by on
Vehicle: 2006 GMC Sierra 2500HD SL1 2dr Regular Cab 4WD LB (6.0L 8cyl 5M)

Purchased new. Plain Jane with manual windows, stick, vinyl interior. Just what I wanted. Have experienced no problems that have required a dealer visit. I have over 30K and it runs fine. Wish I could have gotten 3.73 vice the 4.10 axles. Still get 15 mpg on the highway.




2500hd crew cab, sb with

by on
Vehicle: 2006 GMC Sierra 2500HD SLE2 4dr Crew Cab 4WD SB (6.0L 8cyl 4A)

Nice truck overall. Really get's the job done. Best tow vehicle I've ever owned. 8.1 V8 has plenty of torque. Get's better mileage than 454's I've owned previously.




Excellent family recreation truck

by on
Vehicle: 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.




2500hd duramax

by on
Vehicle: 2006 GMC Sierra 2500HD SLT 4dr Crew Cab LB (6.0L 8cyl 4A)

The GMC HD Duramax is by far the best diesels you can buy on the market. I recently compared the duramax to other cummins and powerstroke diesels and it out performs them from towing to payload to the comfortablility of the ride. I recently compared the duramax 2500HD to the Ford f-450 and I compared everything and the thing that stood out to me was that the GMC maxed out at 16000 pounds and the Ford pulled only 14000 and the ford was twice its size and still the duramax was the best. So weather you are a ford, GMC, or Dodge guy duramax is the diesel to buy.




Sad but true

by on
Vehicle: 2006 GMC Sierra 2500HD SLE1 2dr Regular Cab 4WD LB (6.0L 8cyl 5M)

This truck was without question the nicest riding, looking and driving truck I have ever owned. Good power for towing or snow plowing with the standard 6.0 gas engine. This truck, despite its terrible fuel economy [avg 10 mpg with 4.10 axles] was always a pleasure to drive. Two days ago I started up the truck to hook up the job trailer it was hard to pull out of park. I noticed the check engine light on and noticed rough running along with a burning smell. I had it towed to the dealer and got a phone call that mice had eaten wiring in the power center under the hood and that all the wiring and the power center would need to be replaced. After seeing in person what a catastrophe it must go.



Full 2006 GMC Sierra 2500HD Review

What's New for 2006

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.

Introduction

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.

Body Styles, Trim Levels, and Options

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.

Powertrains and Performance

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.

Interior Design and Special Features

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.

Driving Impressions

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.

Talk About The 2006 Sierra 2500HD

Gas Mileage

EPA-Rated MPG

  • Not Available
  • cty
/
  • Not Available
  • highway
Calculate Yearly Fuel Costs