2020 GMC Sierra 1500 Denali
What happened
loss of power. lower then normal oil pressure. metal in oil
rob bearing failure. needs new engine
Case details
- Mileage at failure
- 124,002 mi
- Date of failure
- Sep 16, 2026
- Repair status
- Unresolved
- Out-of-pocket
- $14,238
- Days out of service
- 10 days
- Warranty
- Not under warranty
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A failed engine, weeks in the shop, or a denied claim can trigger warranty and lemon-law protections. See where you stand, no pressure.
Know your rightsOther Sierra 1500 failures
2023 GMC Sierra 1500
Denali
I was on the interstate, traveling at 75+MPH. The motor was above 3K RPM, and sounding like it was over working. Backing off the accelerator, the truck shifted to the next gear, but applying the accelerator down shifted, and RPMs returned to +3K. "Engine Oil Hot / Idle Engine" error was displayed. Truck shifted itself to Neutral, and I coasted to a stop on the Right shoulder. The engine seized, I achieved a stop, and put in park. Truck would not eletronically shift back into neutral when the tow truck came to collect the truck. I had a full car of Family, and our dog. We were stuck in the Texas heat for an hour waiting for the tow. (No A/C due to truck's seized motor)
2021 GMC Sierra 1500
AT4
Bent lifters, half-engine rebuild
2019 GMC Sierra 1500
AT4
We were friving down the interstate in Chattanooga TN when it started shaking, had to have it towed home to Madison Alabama to a dealership to have it diagnosed. Had cylinder 7 failure and had to have a whole new engine.