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Service bulletin 010603003

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 id622959
Published by NHTSA2001-10-25
Manufacturer's number010603003
Manufacturer's date2001-03-01
NHTSA componentELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

NHTSA's summary

SOME DRIVERS MAY COMMENT THAT THE GENERATOR UPPER MOUNTING BOLT IS BREAKING ON CERTAIN CONVENTIONAL MEDIUM DUTY MODELS. *TT

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

Electrical system, Alternator

Vehicles listed
CHEVROLET C61996
CHEVROLET C65001997 to 2000
CHEVROLET C71996
CHEVROLET C75001997 to 2000
GMC C61996
GMC C65001997 to 2000
GMC C71996
GMC C75001997 to 2000

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