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Service bulletins for the 2021 Chevrolet 6500XD

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

5 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
22-NA-2262024-02-14. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This informational bulletin provides information on Information on 6500XD/7500XD Medium Duty (LCF) with the 6.7L Cummins Diesel Engine.
22-NA-2262022-12-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This informational bulletin provides information on Information on 6500XD/7500XD Medium Duty (LCF) with the 6.7L Cummins Diesel Engine.
20NA1322021-05-03. Service bulletin. ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.