GM 6.2L L87 V8 Recall Explained: Why the New Oil Fix May Not Solve the Problem

What’s the Problem

General Motors recently updated its recall remedy for certain 2021-2024 full-size trucks and SUVs equipped with the 6.2-liter L87 V8 engine — a motor that’s been at the center of widespread owner complaints, federal scrutiny, and multiple lawsuits. The engine was initially recalled because connecting rod and crankshaft components may have been manufactured out of specification, leading to bearing contamination and potential catastrophic engine failure without warning.

That recall impacts nearly 600,000 vehicles in the U.S., including popular models like the Chevrolet Silverado 1500, Tahoe, Suburban, GMC Sierra 1500, Yukon, and Cadillac Escalade.

Allegations

Owners and plaintiffs in litigation allege that:

  • The defect can cause sudden loss of propulsion and engine breakdown without notice.

  • GM’s recall remedy is inadequate and does not fully address the root mechanical failures.

  • Customers have experienced repeated issues even after recall service, fueling complaints and class-action activity.

These lawsuits contend that GM was or should have been aware of the defect early in production and failed to disclose it or design an effective remedy.

Recall / TSB Update

As part of the recall remedy, dealers originally were instructed to inspect recalled L87 engines and, for those that passed inspection, perform an oil and filter change using a thicker oil specification than originally required. That recommended oil shifted from 0W-20 to a 0W-40 grade as part of the recall fix.

Most recently, GM issued new technical bulletins to dealers stating that recalled engines which are serviced but not replaced should now be filled with a different 0W-40 oil blend — specifically switching from Mobil 1 Supercar 0W-40 to Mobil 1 FS 0W-40 once existing Supercar oil inventories are depleted.

According to the service bulletin and reporting:

  • The FS 0W-40 blend has the same viscosity but is more commonly available and less expensive than the Supercar version.

  • Both oils meet the required high temperature, high shear performance, but differ slightly in additive chemistry and target application.

GM made the switch to reduce cost and improve availability for dealers and customers, but the change has drawn renewed attention because it reflects continued adjustments to the recall remedy.

Symptoms

If your vehicle is part of the L87 recall or you’re experiencing issues with your 6.2-liter V8, you may notice:

  • Unusual engine noises (knocking, tapping)

  • Loss of power or stalling

  • Warning lights on the dash

  • Oil pressure issues

  • Metal particles in the oil or on the dipstick

Those symptoms can be signs of internal engine wear or failure — especially in engines affected by the subject machining and bearing defects.

How to Proceed

If you own a GM vehicle equipped with the 6.2L L87 V8:

  • Check your VIN for recall status: Use your VIN to verify whether your specific vehicle is included in the recall. This can be done through GM’s recall lookup tools or by contacting a dealer.

  • Schedule recall service promptly: Make an appointment with your authorized GM dealer to have the inspection and remedy performed at no cost.

  • Document everything: Keep detailed records of all service visits, repair orders, and communications with the manufacturer or dealer.

  • Monitor ongoing performance: After the recall service, continue to watch for any signs of problems and report them to your dealer immediately.

  • Talk to a lemon law attorney, like Valero Law: If you continue to experience repeated failures, inadequate repairs, or diminished performance even after recall service, you may be entitled to legal relief under California Lemon Law.

Call Valero Law

If you’re a GM owner dealing with persistent issues related to the 6.2L L87 V8 engine, the recall remedy may not fully address the ongoing mechanical and reliability concerns you’re facing.

Call Valero Law, APC at (424) 299-4447 or complete our free Lemon Law case evaluation form today. You may be entitled to compensation including a complete repurchase of your vehicle, replacement vehicle, or substantial cash reimbursement for the damage caused by this engine defect.

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