Recalls and bulletins

GM 6.6 L8T (gas) recalls and service bulletins

1 NHTSA safety recall name this engine. Each entry shows the campaign number, the model years, what was wrong and what the fix is.

GM 6.6 L8T (gas): failure modes and parts Safety recalls 1

Check a specific truck: enter its VIN at nhtsa.gov/recalls for open safety recalls, and ask a dealer about emissions recalls and coverage programs, which NHTSA's lookup does not always show. Recall repairs are free on an eligible VIN.

Safety recalls (NHTSA)

Newest first. NHTSA's own summary and remedy text, for the models and years this engine was sold in.

21V-189 Safety recall March 18, 2021 · maker's number N202325160 · 2021

General Motors, LLC (GM) is recalling certain 2021 Chevrolet Express and GMC Savana vehicles equipped with 6.6L gasoline engines. The positive battery cable terminals may contact a fuse block assembly attachment post and cause an electrical short circuit.

Risk and remedy

Risk: A short-circuit can increase the risk of a fire.

Remedy: Owners are advised to park their vehicles outside and away from structures until the repair is complete. GM will notify owners, and dealers will remove a portion of the anti-rotation tab on both positive battery cable terminals near the fuse block assembly attachments, free of charge. If too much of the tab had been removed during prior servicing, the battery cable will be replaced, free of charge. The recall began April 16, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC customer service at 1-800-462-8782. GM's number for this recall is N202325160.

Models in our scope: EXPRESS, SAVANA

Bulletins, programs and coverage

Manufacturer service bulletins, special coverages, programs and emissions recalls that bear on this engine's documented failures. Identifier, date and scope only; bulletin text is the manufacturer's.

No manufacturer bulletins are documented in our records for this engine yet. That is a gap in our records, not proof that none exist.

Method: safety recalls come from NHTSA's recall database, pulled for every make, model and year this engine covers; a recall is listed when its NHTSA text names this engine (fuel type, displacement or engine family) and left out when it names no engine. Defect investigations come from NHTSA's investigations file by the same rule, or when the investigation cites a recall listed here. Bulletins and programs come from the failure-mode records on this site, each with its source. Pulled 2026-10-26. How we tier and source facts.