WenmarOpen by Wenmar Pro

Service bulletins for the 2021 Chevrolet 7500XD

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.

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

By type

By component

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.
18NA2352022-05-31. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. This information bulletin advised the tech of possible use of low fuel quality and the possible ramifications in performance in regards to the customers concerns.

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