Overview & Reviews

On extended and crew cab models, a power sunroof is a new option, and it includes a HomeLink universal transmitter and deluxe overhead console.

• Powerful engine lineup, multiple drivetrain configurations, substantial towing and hauling capacities.

• Spotty build quality, mediocre design and interior materials.

User Reviews:

Showing 1 through 10 of 35.00

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  Speedometer Problems - 2005 GMC Sierra 2500HD
  By polonerw - May 16 - 7:10 pm

  I bought my Duramax Diesel 2500 Hd crew cab to pull a 36 foot fifth wheel. There is plenty of power; however, have had a few problems. The speedometer failed at about 60000 miles and had to be replaced. I have read that this is a common problem but there is a class action lawsuit and I plan to turn in my 478.00 receipt and hopefully get reimbutsed from GM. The engine light came on and paid to have the code read which was relatively meaningless but havent had any more problems with that. I added a Superchip which is amazing how much perfromance improvement. Have heard that some people have burned up transmission with Superchip but I always reset to towsafe prior to pulling anything.

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  The good and the bad. - 2005 GMC Sierra 2500HD
  By Ken - March 26 - 7:20 am

  Purchased this truck on 5/26/05. Had it only three days and had to put it in the shop for automatic transmission repair. It was in the shop for four days. First gear went bad after only 500 miles. It doesnt turn as close as my old Yukon but it is a larger vehicle. The engine is powerful. I cant even feel my trailer. I like the looks. For an XLT it doesnt have some of the options I thought it would have. ie. lumbar seat, rear A/C. I really like the truck. Im just disappointed with the transmission problem and the lask of service from the dealer. Im just waiting for something else to break. It also is a little bumpy. Maybe thats normal.

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  GMC 2500HD Diesel-Automatic Crew LB - 2005 GMC Sierra 2500HD
  By Steve - January 21 - 9:00 pm

  WOW....What a fantastic Truck! I have a 1995 FORD 250 Gas (70K Miles), and a 1994 GMC Gas (113K Miles). The 2005 GMC is comfortable enough and even with the longbed easy enough to drive and park that I leave the car in the garage and use the truck for work and play. When it comes to the work portion it is one powerful, competent truck. I wish the side mirrors were the size of Fords. All the manufacturers need to install a tie down hook in the front middle of the truck bed. Metal around rear wheels in truck bed is too thin in the GMC. GMC needs a radio mute button on the steering wheel. Needs additional LARGE cup holder for the driver in center consol. Cup holders too close together.

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  One Sweet Truck! - 2005 GMC Sierra 2500HD
  By Scott Stanley - January 16 - 2:00 am

  This is a wonderful truck. It rides so smooth you think you are in a Cadillac. This is the second GMC I have owned and I dont think that I would own any other truck!

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  2500 HD GMC - 2005 GMC Sierra 2500HD
  By Enymoose - June 20 - 9:43 pm

  I highly recommend this version of the GMC to those who do not mind a stiff ride that will pull anything a truck is supposed to pull. The 6.0 engine coupled with the 4.10 rearends give it enough power to pull a house off of its foundation if you wanted to put it to that type of test. I put it to the test using the 4X4 at Ft. Fisher, NC in sand that others were getting stuck up in and had no problems once I dropped the air pressure down to 20 lbs per tire from the origional 60. The fishing was great also. Ive had 9 other 4X4s, between Ford and Chevys and this GMC is by far the

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  05 6.6 V8 - 2005 GMC Sierra 2500HD
  By troyman89 - May 5 - 6:16 pm

  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

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  Better than expected - 2005 GMC Sierra 2500HD
  By Car Guy - May 5 - 10:00 am

  So far this vehicle has exceded my expectations as to power and towing ability. I could not believe I was passing other vehicles as I was going up hill pulling a 20 trailer with a car inside the trailer. The gas mileage continues to improve as the vehicle breaks in. I love driving this vehicle and I am confident in its reliability.

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  What a fun beast! - 2005 GMC Sierra 2500HD
  By Stuart Schotte - February 23 - 5:03 pm

  Bought it new last month. I had a problem with the overflow tank leaking into the wiring harness and ruining a control module. 10 days in the shop and then the radio had to be replaced. Some gremlins in the electronics. If it is all fixed this will be my dream truck! I have the diesel. I am getting about 17mpg at 70-75 on the highway vs 14 for my 2002 Chevy K1500 w/ the 5.3 ltr. This thing will go straight up mountains without downshifting! What a beast! I was towing about 9k lbs behind the Chevy. I cant wait to hook "Max" up to the trailer! XM is nice for trips too. I have the buckets in front and the console encroaches on my leg when driving (Im 64"), but you get used to it!

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  Pleasantly Surprised - 2005 GMC Sierra 2500HD
  By K - September 21 - 6:43 pm

  Duramax diesel showing 22 to 23 mpg on highway. Very smooth shifting with Allison transmission (even under load). Ride is a little stiff, but expected with 2500HD. Truck is extremely capable.

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  GMC2500HD - 2005 GMC Sierra 2500HD
  By response - August 19 - 3:23 am

  Its a love/hate relationship between me and this truck. I first fell in love with the outside design. The front view has the same appearance as the Denali. It rides high and has a very aggressive look. It has plenty of power and has yet to be challenged by any load have had. The 6.0L is one of my prized possessions. Most of the of the negative comments here should have been expected, I understand. It sucks gas. Im averaging around 14 MPG. It offers a bumpy ride. The dash board seems cheaply made, with thin plastic. The rear end can get loose quickly on wet surfaces. The power steering box went out twice. 17 inch rims on a truck of this size is an injustice.