2008 GMC Sierra 1500: engine failure

Filed Apr 15, 2021 · Airbags, Brakes · 169,393 miles · TX

I was driving from lufkin to hemphill at 70 MPH. Something blew up, I thought something hit me. Engine died, brakes started, emergency lights came on, and seatbelt locked down, truck stopped, I got out to see what hit me. Nothing! When I got back in the truck a white powder (not smoke) was coming out of the seat belt on drivers side. When seat belt locked down I had to back seat up to get out of the belt. I was lucky that I did not hit someone.

Filed May 2, 2019 · Engine · 163,000 miles · MS

My sierra developed a noise on deceleration. Took it to the gmc dealer and was told it had a worn cam. $5500 to repair, $7750 to replace engine. I knew that a worn cam would cause lifter noise all the time so that was wrong info. Upon further investigation I found out this truck has active fuel management. What happened was a failure of the system. It should be noted that this truck always had high oil consumption. I deactivated the active fuel management system. The truck runs on all 8 cylinders, is completely quiet and no longer uses oil. It is better than new. I also found hundreds of complaints similar to my and paid for expensive repairs. This active fuel management is nothing more than a scam to falsely increase fuel mileage and to rip off customers when it goes bad. It can be deactivated with a $175 chip.

Filed Jan 20, 2019 · Engine · 98,370 miles · VA

Lifters failed at 98,000 causing engine replacement.

Filed Jun 22, 2016 · Engine · 108,000 miles · OK

Collapsed afm lifter at 108000 miles. I was driving down the highway and all of the sudden my check engine light came on, service traction control and service stabilitrak. My engine was idling rough at low RPM. Took vehicle to the dealership and was told that it had a collapsed lifter on the #6 cylinder. I have always had the oil changed regularly at the dealership. Was told it would be 4800 to replace all the lifters, 5300 if the cam was bad also and 7300 for a new engine.

Filed Jun 17, 2016 · Engine · TX

Ticking noise began once the vehicle reached ~100,000 miles. Initially, the ticking only occurred once the engine was started. As time went on, the ticking became more frequent, to include upon engine start and while the vehicle was under load/accelerating. At approximately 108,000 miles, the tick became constant while the engine is running. Gmc dealer diagnosed the problem as a failed lifter, which, apparently, has been a common problem in gm 5.3l engines. A vehicle should not need a new engine, or even new lifters for that matter, at 100,000 miles. This is a known issue, with many consumers reporting it and gm acknowledging it. Vehicles with these engines should have been recalled years ago.