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Service bulletin 170602

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 id637234
Published by NHTSA2002-11-21
Manufacturer's number170602
Manufacturer's date2002-06-17
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY

NHTSA's summary

BRIEF INFORMATION PERTAINING TO THE REMOVAL OF THE REAR AXLE DRAIN PLUG ON 2002 MODEL YEAR FULL-SIZE PICK-UP AND FULL-SIZE UTILITIES. *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

Transmission and driveline, Axle

Vehicles listed
CHEVROLET CHEVROLET TRUCK2002
GMC GMC TRUCK2002

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