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Service bulletin 050901

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 id626068
Published by NHTSA2001-12-12
Manufacturer's number050901
Manufacturer's date2001-09-05
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

SUBJECT REGARDING CERTAIN MODELS INCLUDING 2001-2002 CHEVROLET AND GMC GMT 800 RPL LB7 6600 DURAMAX DIESEL ENGINE FAILURES. *SLC

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
CHEVROLET CHEVROLET TRUCK2001 to 2002
CHEVROLET GMT 8002001 to 2002
GMC GMC2002
GMC GMT 8002001 to 2002

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