Overview & Reviews

Coming off a redesign last year, the 2008 GMC Sierra 1500 has only minor changes this year. Satellite radio is now standard equipment and an integrated trailer brake controller is optional. GMC says it will also be offering 22-inch wheels (as a dealer accessory) and a flashier version of the Z71 Off-Road package called the Sierra All Terrain.

• Refined and very quiet ride, pleasing fit and finish inside, seats are comfortable for long drives, comprehensive list of safety equipment.

• Larger turning circle than most rivals, mediocre interior storage and cupholders.

User Reviews:

Showing 1 through 10 of 91.00

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  Not a Happy Owner - 2008 GMC Sierra 1500
  By Luke - July 16 - 6:26 am

  I have always been a Chevy man, really needed a new pickup so I went with the GMC. I wanted the 5.3l because it does great in my 01 Suburban. My New 5.3, which has fuel management gets much worse mileage. I get 13.5 MPG at any speed or condition driving, even downhill. Also the 4 sp transmission is clunky, brakes are sticky, interior clothe is Horrible, interior plastic comes apart, body has many mud pockets which will rot the metal and the front tire sprays road wash Into the frame by the front door. I am NOT happy with this truck which now has 3500 miles on it.

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  me again - 2008 GMC Sierra 1500
  By jeffhall - February 15 - 2:36 pm

  well 2008 gmc half ton 4x4 seirra. "heck i really dont know where to begin . it seems this truck looks good but i have had uncountable troble with it it has now 46914 miles and last night it was on the record being towed to the dealership becouse the locking diff engage coming out of my garssy back yard with a slight incline. and try alot of things to disingage the locking diff and i just didnt get it to disengage. anyways ..heres what ive had problems withother than what i just mentioned . flashes from under truck while driving, blinkers , tail lights fogging up, battery leaking all over the underhood side, gadges doing weird stuff, light display correctly, "ran out of space to keep typing.

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  Check carefully before you buy - 2008 GMC Sierra 1500
  By txcwby - June 29 - 2:16 am

  Overall, i would not buy this truck again due to repair costs. At 104,000 miles (notice its just outside the warranty) engine heads both cracked - with the mileage and the reported issues about oil usage and AFM related issue, it makes more sense to replace with a GM crate engine than to solve part of the problem. Mileage on E85 is 14mpg in 2wd if you are an extremely light footed driver. With 87 octane, the average mpg (light foot) is 18mpg-19mpg in hilly terrain. As a cowboy and rancher, my vehicle is my lifeblood and cost of ownership and reliability is key. This truck just hasnt met the minimum expectations. Cost for new engine at GM dealer - $7,898.77

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  Disappointed - 2008 GMC Sierra 1500
  By Darryl - May 22 - 10:10 pm

  I have loved Chevrolets and GMCs for 30 years. My 03 Chevy Silverado was the best truck I have ever had. The 08 GMC has been the most disappointing truck I have ever purchased. I am constantly getting alarms that include: Park assist off, air bag, low tires when they are not. On top of the alarms that the dealer cannot fix I have had two interior fans replaced and they are rattling again. The motor is tapping even though I do the recommended everything. The ABS brakes act like I am on ice on dry road. Cheaper braking system. Already have warped discs. My o3 brakes went 144K miles. The sun visors are not wide enough to block the sun. Cannot handle the same trailer as the 03.

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  Aint what she used be - 2008 GMC Sierra 1500
  By jst0771 - May 1 - 1:46 pm

  Bought in July of 08, currently have 65K on the truck. the only gripe I really have about is a major one. The powertrain. Im not a hard driver, mileage has been mostly highway. Ive had the forward sprag gear brak in the transmission, a front wheel bearing start to come apart, and now its sitting in the service department for low oil pressure. It also is down 2.5 quarts of oil with 25% life left on the monitor and no low oil level indicator. Ive been told by the service department that the engine can burn a quart every 1000 to 2000 miles and be considered normal. Ive reviewed several forums on the issue, and there are alot of people with with the same issue, being told the same thing.

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  transmission dead after 44k miles - 2008 GMC Sierra 1500
  By jms20 - March 31 - 1:38 pm

  I bought this truck new and it has been generally fine. Unfortunately the transmission self-destructed 1 month out of the 5 year warranty. I do mostly city driving and rarely tow. The dealer tried to repair it but apparently it was so bad they gave up and put in a rebuilt one. Very disappointed given Ive only driven it 40k miles. The dealer was able to get some of it covered by GMC at least but I felt like they should have covered it all since the problem started before the 5yr end date.

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  Still not sold on vehicle - 2008 GMC Sierra 1500
  By north star - May 27 - 7:46 pm

  Bought pickup through GM Employee Pricing sale and got very good deal. Not quite sure about pickup, as you can feel the 4 and 8 cylinder activating and de-activating. I have experienced the tranny jerk from a complete stop as well. After changing oil I can smell oil in the cabin for at least the first 1,500 miles before going away, cannot find any leaks anywhere.