6.2L L87 engine seizure and loss of propulsion
ENGINE
38 NHTSA complaints · 2025-11 → 2026-06 (sample of 200 most-recent of 658 total)
“My wife and I were driving at highway speed around 70mph and truck shut off. There were no dash indicators or warning lights that signaled any engine/diagnostic issues prior to engine shutting off. Lost all power but still had brakes and steering. Coasted to safe stopping point…”
“My L87 6.2L engine shut off on the interstate while driving in traffic at 70mph. I coasted to the left shoulder and attempted to restart it, but it would not turn over. I had it towed to a dealer where they diagnosed it as seized. Currently waiting for a new engine to arrive…”
“I had the GM 6.2L motor recall test, it passed. Catastrophic engine failure at 50mph roughly 6000-7000 miles later. Luckily I got off the road safely. Confirmed by GM dealer, new engine has been ordered. No warning lights.”
“My truck has the 6.2l engine, prior to me buying it in September 2025 with 27,000 miles it had its engine replaced due to the recall/engine failure, then after 6,000 miles on 12-30-25 the 2nd engine it has had failed and had to be replaced. This truck that only has 34,000 miles…”

