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Service bulletin CSR 527

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10203671
Published by NHTSA2021-12-01
Manufacturer's numberCSR 527
Manufacturer's date2021-11-30
NHTSA componentELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

NHTSA's summary

Fiat Chrysler Automobiles US has decided that a defect that relates to motor vehicle safety exists on certain 2021 through 2022 model year (DJ) Ram 2500 pickup, (D2) Ram 3500 pickup, (DD) Ram 3500 cab chassis, and (DP) Ram 4500/5500 cab chassis vehicles equipped with a 6.7L Cummins engine. Refer to the included communication from FCA US for additional information.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine

Vehicles listed
ALTEC AERIAL DEVICE2021 to 2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.