Engine failureUnresolved

2019 GMC Sierra 1500 AT4

Madison, AlabamaReported 1 month ago

What happened

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.

Symptoms

Engine knockingSudden loss of power

Dealer response

Cylinder 7 failure, wanted to rebuild the top of the engine. Decided to have a complete engine replacement at independent shop.

Case details

Mileage at failure: 88,000 mi
Date of failure: Oct 10, 2025
Repair status: Unresolved
Out-of-pocket: $8,400
Days out of service: 120 days
Warranty: Not under warranty

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