L87 RegistryGM 6.2L V8 Failures
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Power lossRepaired (paid)

2021 GMC Sierra 1500 AT4

Omaha, NebraskaReported 1 month agoby Sandra

What happened

Bent lifters, half-engine rebuild

Symptoms
Engine knockingSudden loss of powerCheck-engine light

Case details

Mileage at failure
64,532 mi
Date of failure
Jun 1, 2026
Repair status
Repaired out of pocket
Out-of-pocket
$5,000
Days out of service
7 days
Warranty
Not under warranty

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