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Service bulletin 030842004

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 id10002391
Published by NHTSA2003-08-27
Manufacturer's number030842004
Manufacturer's date2003-05-01
NHTSA componentEXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH

NHTSA's summary

HEADLAMP LOW BEAM BULB SOCKET NOW AVAILABLE FOR SERVICE USE. *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, Headlights

Vehicles listed
CHEVROLET TRAILBLAZER2002, 2003
GMC ENVOY2002, 2003
OLDSMOBILE BRAVADA2002, 2003

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

Other bulletins for the same vehicles and component
02-08-42-001I2017-08-31. Service bulletin. This informational bulletin provides an out line on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage and what should be considered warranty replacement and not
01-08-42-001K2017-08-31. Service bulletin. This informational bulletin provides information on exterior lamp condinsation and replacement guidelines
3170E2006-02-16. Service bulletin. IPC, INTERIOR LIGHTS AND/OR HEADLAMPS FLICKER. *AK FB2
0508420052005-11-03. Service bulletin. INFORMATION ON VERTICAL REFLECTION FROM HEADLAMPS WHEN USING HIGH BEAMS IN DENSE FOG. *TT UPDATED 04-04-07. *KB
36802005-09-21. Service bulletin. AUTOMATIC HEADLAMP DEFEAT INOPERATIVE AFTER BCM REPLACEMENT. *TT
0508420012005-05-14. Service bulletin. DIAGNOSTIC INFORMATION ON HEADLAMPS FLICKER OR MOMENTARILY DIM WHILE DRIVING. *TT
3317A2005-04-20. Service bulletin. HEADLAMPS FLICKER OR DIM WHILE DRIVING. *TT
30442004-10-14. Service bulletin. LOCATION OF THE HEADLAMP DRIVER MODULE (HDM). *TT
0308420102003-12-02. Service bulletin. DAYTIME RUNNING LAMP FEATURE CANNOT BE DISABLED AFTER BODY CONTROL MODULE (BCM)REPLACEMENT. *TT
0313032003-07-25. Service bulletin. UNABLE TO DISABLE THE DAYTIME RUNNING LAMP FEATURE WHEN FOLLOWING THE PROCEDURE IN THE OWNER'S MANUAL. *TT *JB