The Truth About the 6.2 L87 Mechanics WON'T Tell You (Before You Buy)

Before you buy a 6.2 L87 truck, here's the honest truth most mechanics won't tell you about Chevy and GMC's all-aluminum V8 — and the one detail making buyers cancel brand-new orders. The 6.2 L87 powers the trucks people brag about — the Silverado High Country, Sierra AT4, Tahoe, Suburban, Yukon, and Cadillac Escalade — with 420 horsepower and 460 lb-ft. But under the hood of the 2021 through 2024 model years sits a recall (campaign 25V274) covering nearly 600,000 trucks and SUVs over connecting rod and crankshaft defects. In this video we walk through exactly what an honest tech checks first: the cut-open oil filter, the genuine cold start, the cold-start tick versus the bottom-end knock, and why the dealer "fix" — a jump to 0W-40 oil — doesn't replace the flawed parts already inside. We cover why even some 2026 Sierra trucks are showing trouble at almost no miles, which model years are the real money pits, and the five-step checklist that protects your wallet: run the VIN, find out which remedy the truck got, read the oil history, demand a true cold start, and pay for a pre-purchase inspection. If you already own one, we break down oil habits and AFM/DFM disablers that stack the odds in your favor. Know an L87 truck before you sign anything. If this helped, hit subscribe for more honest American truck and engine breakdowns — we dig up what the showroom keeps quiet. #Chevy #Silverado #TruckBuyingTips