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2008 GMC Sierra 1500 SLE1 2dr Regular Cab 4WD 6.5 ft. SB (4.8L 8cyl 4A)
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 I've 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.
2008 GMC Sierra 1500 SL 4dr Extended Cab 6.5 ft. SB (4.8L 8cyl 4A)
Truck has 34000 miles on it. Main turn signal switch went out, Door lock switch out, Airbag sensor out, Master window switch out ($400) for a switch! Truck now will not engage the starter, so it's in the shop again. Do not buy any GMC or Chevy truck! Going back to Dodge.
2008 GMC Sierra 1500 Work Truck 2dr Regular Cab 8 ft. LB (4.3L 6cyl 4A)
GMC will not stand behind there Trucks. My 2013 Sierra has ahard banging type clunk noise when shifting to 3rd gear sometime it feels like the powertrain is going to break. After several attemts to have it resolved including a test drive from a GM rep i have been told this is normal condition. GM bulletin # 01-07-30-042G. This truck has less than 9k miles on it.
Impove on customer service.
2008 GMC Sierra 1500 SLE2 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 4A)
Just after the power train warranty expires my AFM lifter sticks.
$3000 shop bill later and some internet research I know to watch my oil level like a hawk and never purchase another GM.
Also the Massive cracks in my dash remind me of 80's GM.
Its nice to see them bringing back the materials from their 80's cars.
Don't buy one of these trucks.
Buy new and dump them when out of warranty.
I would say the drain your wallet feature is my favorite. Knowing that GM is pushing AFM on all their trucks makes my decision to avoid future Government Motors vehicles an easy one.
Fix or Lose the AFM system. Roll out a small diesel in 1/2 ton trucks. Do a proper re-call for older AFM trucks and restore belief in your product.
2008 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 4A)
Overall, i would not buy this truck again due to repair costs.
At 104,000 miles (notice it's 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 hasn't met the minimum expectations.
Cost for new engine at GM dealer - $7,898.77
Interior is well done, instrument cluster is extremely clear, and buttons are all sized for when you have gloves on.
Turning radius is ridiclously large. Body roll/sway when making a sharp turn at >45mph can easily feel like losing control due to length of vehicle and stiffness of frame. Oil level gauge needs to be installed - this truck will go from 'ok' to stop engine - low oi pressure without any warning - such as oil pressure PSI gauge showing reduced oil. That's great for the pump working effectively, but it's nice to know when you're getting low - and based on forum feedback, the AFM engine in this truck can burn 1 quart of oil every 3,000 miles and be considered normal by GM.