Overview & Reviews

Other than satellite radio becoming standard across the line, the 2008 GMC Sierra 2500HD sees no changes.

• Massive towing and hauling capacities, refined and quiet ride, excellent build and materials quality, comfortable seats.

• Side-impact airbags and side curtain airbags are not available.

User Reviews:

Showing 21 through 27 of 27.00

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  Back to re-review after 6 months - 2008 GMC Sierra 2500HD
  By SLC - June 22 - 5:30 pm

  I wrote my first review in June after trading in a 2004 F-150. It has only got better and better. Absolutely no issues. Fuel mileage has gone to over 23 MPG on a recent hiway only trip of 600 miles, to between 15-18 MPG back and forth to work and weekend trips. I have not had this kind of acceleration since my 61 Vette. There are no rattles or any fit/finish problems. Only oil changes and tire rotation. I would not trade this truck for any other on the market. I did extensive reseach and I am so glad I choose this HD2500, Duramax/Allison. I would recommend this truck to anyone, no hesitation.

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  2008 2500 HD 4x4 6.6L DurmaxW/Allison - 2008 GMC Sierra 2500HD
  By tdust - November 29 - 4:35 pm

  This is a great truck,This truck was used in the oil and gas industry and it has over 188,000 miles that I put on it.The truck has never been put in the shop for any major repairs.just regular service.Avarage 4000 to 5000 miles a month and it never left me on the side of the road.Tows like a beast! Used to pull loads of 7 to 9 thousand pounds over 600 miles @ 70 MPH.In fact I liked the truck so much when we got our new 2011 GMCs I bought this one from the owner.now she is retired but I wouldnt hesitate to drive the truck anywhere.

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  Great truck but a kidney blaster empty - 2008 GMC Sierra 2500HD
  By Steve - November 29 - 10:20 am

  I love this truck but when I am not towing or under load she will shake you on bad michigan roads. I decided to weigh it down a bit in the back and that has smoothed it out for sure. MPG is 12. 12 @ 74 towing the boat, 12 at 35 around town. I got 14 on the highway going 65 but that was hard to take for a 2mpg gain. Love the solid feel of the truck!

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  7 months of ownership & still great! - 2008 GMC Sierra 2500HD
  By GMCcowboy - October 9 - 1:23 pm

  Bought my 2500HD 4x4 back in August. 8500 miles later, I still love the performance, comfort, and looks of it. Ive made one 900+ mile trip towing a 4,000 lb. trailer, and it drove like there was nothing attached to it. The interior comfort is excellent. The seats are very comfy, and the quality is outstanding. I have not had any problems to speak of. Im real impressed with this truck. The only downside is the gas mileage (to be expected). I average 12/13 in the city, 16-18 highway (depending on speed) and 12.5 towing a trailer on the interstate. Reckon the 6-speed auto helps the MPG a bit.

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  15 months later, still a great truck - 2008 GMC Sierra 2500HD
  By godblesstx - September 30 - 10:53 pm

  This is definitely a Cowboy Cadillac. Performance wise, the gas V8 has all the power youd need and tows my 7K # trailer with ease. The tranny shifts smooth but as another reviewer said, make sure you get the TCM flash for better kickdown response. The 2500HD pure pick up interior on the SLE not only looks great, its durable and functional as well. The front seats are great for long road trips. Im getting about 12 mpg around town and up to 17.5 mpg highway at speeds up to 65. Above that, it nosedives into the 12-14 range. Overall, Im completely happy with my truck after 15 months. Ive had no problems and plan to keep this for a long time.

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  Needs Help - 2008 GMC Sierra 2500HD
  By Totally unimpressed - July 4 - 8:56 am

  Before buying this truck I owned a F250 V10. This truck was supposed to have 50 more hp and comparable torque but its lack of power is remarkable. My mpg is ok until I hook something behind it then its 5mpg... I have had no less than 20 warranty claims in 1 year. It absolutly can not handle any hitch weight without bottoming out. The sheet metal used to form the body is so thin the smallest bump and you have a dent. I really had high hopes that GM had a great truck but after the trans went out @ 6500 miles and many many other issues Ill admit I was wrong.. This pickup is fine for pulling your boat or cruising around but if you want a HD pickup do not buy this one.

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  My wife stole it from me - 2008 GMC Sierra 2500HD
  By woof_breff - June 17 - 4:18 pm

  The GMC 2500HD is the most fun Ive had driving out of any vehicle. Its powerful, looks good, and can haul a ton of cargo without a problem. Only complaints are the stiff ride quality from so many leaf springs, and its a helluva gas guzzler. No issues with maintenance, and never ran across any major problems (even after 100k mi). The interior is somewhat simple but has nice accents, and is very roomy inside for big folks like me. My wife likes it so much she stole it from me. No hard feelings. Am I a happy camper? Yes. Would I buy it again? Most definitely.