WenmarOpen by Wenmar Pro

Service bulletins for the 2004 GMC Envoy

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.

744 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Headlights are shown. Show all

Bulletins, newest first
02-08-42-001I2017-08-31. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS; EXTERIOR LIGHTING:BRAKE LIGHTS; EXTERIOR LIGHTING:BACK UP LIGHTS. 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. EXTERIOR LIGHTING:HEADLIGHTS. This informational bulletin provides information on exterior lamp condinsation and replacement guidelines
44912007-10-29. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. HEADLAMP FLICKER OR MOMENTARILY DIM WHILE DRIVING. 06-06-03-004 SUPPLEMENT. SHORT WHEEL BASE ONLY. *NJ UPDATED 1/30/08. *NJ
3170E2006-02-16. Service bulletin. INTERIOR LIGHTING; EXTERIOR LIGHTING:HEADLIGHTS. IPC, INTERIOR LIGHTS AND/OR HEADLAMPS FLICKER. *AK FB2
0508420052005-11-03. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH. INFORMATION ON VERTICAL REFLECTION FROM HEADLAMPS WHEN USING HIGH BEAMS IN DENSE FOG. *TT UPDATED 04-04-07. *KB
36802005-09-21. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. AUTOMATIC HEADLAMP DEFEAT INOPERATIVE AFTER BCM REPLACEMENT. *TT
0508420012005-05-14. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. DIAGNOSTIC INFORMATION ON HEADLAMPS FLICKER OR MOMENTARILY DIM WHILE DRIVING. *TT
3317A2005-04-20. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. HEADLAMPS FLICKER OR DIM WHILE DRIVING. *TT
30442004-10-14. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. LOCATION OF THE HEADLAMP DRIVER MODULE (HDM). *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.