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Service bulletin 42

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 id637914
Published by NHTSA2002-12-09
Manufacturer's number42
Manufacturer's date2002-02-01
NHTSA componentEXTERIOR LIGHTING:TURN SIGNAL:FLASHER UNIT

NHTSA's summary

OWNERS MAY COMMENT THAT THE TURN SIGNAL ON THEIR 2000 - 2002 FULL SIZE PICKUP OR UTILITY MODEL FLASHES FASTER THAN ON OTHER VEHICLES OF THE SAME MODEL. *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

Lighting, Turn signals

Vehicles listed
GMC GMC TRUCK2000 to 2002

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