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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  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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  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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  GMC 2500 hd - 2005 GMC Sierra 2500HD
  By eheahey - May 25 - 9:16 pm

  Good reliable truck. poor interior design for room (my 2003 was much better) 1st bose radio I have ever had that was worth the money. Satellite radio very dissapointing.

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  Its OK, but check out the Dodge too - 2005 GMC Sierra 2500HD
  By gmc driver guy - November 3 - 9:43 am

  The 05 replaced my 03, both Duramax, and I have to say that I liked my 03 better. I dont know what GMC did between then and now, but whatever it was, I dont like it. I test drove a Dodge both times and thought that they rode too hard and the back seat was too small. On the other hand, is it worth $10 grand to get a GMC that also rides hard and has a slightly larger rear seat that Im never going to ride in? To be sure, its a nice car, but Im starting to wonder if I shouldnt have bought the Dodge and put the $10 grand into my future Cessna fund. Come on GMC, for fifty grand you guys can do better! If you dont believe me look at your last 3 quarters sales numbers.

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  Great truck - 2005 GMC Sierra 2500HD
  By terry - June 17 - 9:46 am

  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.

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  GMC Sierra 2500HD - 2005 GMC Sierra 2500HD
  By Stew - May 8 - 9:20 am

  I have always wanted to own a new vehicle so last fall I decided to purchase my all time favorite vehicle, the GMC Sierra. I bought it over the internet because I knew what I wanted, I picked up the vehicle and drove it home. I was amazed at the lack of HP and gas mileage. Since this was my first new vehicle I didnt know all about the break in process. It took 2 weeks for the HP to show up and the fuel economy to increase. In the meantime I was entertained by the XM Radio that will be an option in every vehicle I purchase from now on. The interior of GM vehicles still have the working mans look to it, but it is hiding an amazing array of features.

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  Good, but not great - 2005 GMC Sierra 2500HD
  By candleman - October 10 - 11:50 pm

  This diesel was an upgrade from a gas Dodge RAM1500. Pulling a 7,000lb trailer now seems effortless. Turbocharger takes a long time to engage and gas mileage wasnt as good as Id expected for a diesel- about 12.5 pulling trailer which is disappointing since over 20 without. Just had 3 injectors replaced under 100K Duramax warranty which I believe was a known problem in all GM diesels from 2002-2006. No recall, of course! No significant change in power or mileage with the new injectors. I hate that GM always adds a $95+ "diagnostic fee" for the computer hookup with any service. Also- computers trip timer hasnt worked since purchase and the stereo speaker sound is absolutely awful.

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  2500HD - 2005 GMC Sierra 2500HD
  By Amos - June 7 - 10:00 am

  Powerful and attractive. Very versatile.