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Service bulletin 070842003

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 id10021333
Published by NHTSA2007-04-04
Manufacturer's number070842003
Manufacturer's date2007-02-01
NHTSA componentEXTERIOR LIGHTING:TURN SIGNAL:FLASHER UNIT

NHTSA's summary

TURN SIGNALS HAVE INCREASED FLASH RATE (REPROGRAM BCM). *KB

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
CHEVROLET SILVERADO 15002007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002007 (the catalog's model; the bulletin names a series or trim of it)

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
07-08-42-006J2018-05-21. Service bulletin. This informational bulletin provides information for an available BCM calibrations that would restore bulb outages when using a second stage manufacturer
07-08-42-006K2018-05-21. Service bulletin. This informational bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box removed.
SB-07-08-42-006G2016-04-26. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-070842006C2009-10-23. Service bulletin. GENERAL MOTORS: BCM CALIBRATIONS AVAILABLE TO RESTORE BULB OUTAGE DETECTION ON VEHICLES PRODUCED BY A SECOND STATE MANUFACTURER, TURN SIGNALS FLASH FAST AFTER FACTORY BOX REMOVED (UPFITTER). MAY NEED TO HAVE BODY CONTROL MODULE (BCM) REAR TURN SIGNAL BULB OUTAGE DETECTION CAPABILITY CHANGED. *PE UPDATED 5/20/11. *PE
PIT-4696A2008-12-04. Service bulletin. GMC: BMC FAILURE AFTER WINDSHIELD WIPER OPERATION-KEYWORDS: AJAR DOOR DOME DRIVER DIMMER FLASHER FOG HAUL HEADLIGHT HEAD HIGH HAZARD INOP INOPERATIVE LAMP LIGHT LOCK LOW NOT ON OFF POWER PARK RADIO RAP REPEAT SIGNAL SHUT SPEED STAY SWITCH TURN TOW UNLOCK UNWANTED WINDOW. MAY BE DUE TO INTERNAL BCM DAMAGE. *PE
SB-07-08-42-006H2008-08-29. Service bulletin. INFORMATION ON BCM CALIBRATIONS AVAILABLE TO RESTORE BULB OUTAGE DETECTION ON VEHICLES PRODUCED BY A SECOND STAGE MANUFACTURER, TURN SIGNALS FLASH FAST AFTER FACTORY BOX REMOVED (UPFITTER). CHASSIS CAB MODELS AND PICKUPS WITH BOX DELETE OPTION ONLY (RPO ZW9). *PE UPDATED 4/3/2012. *PE MODELS 2007-13 SILVERADO; SIERRA. UPDATED 11/28/12. *PE UPDATED 1/24/13. *PE UPDATED 09/03/14*LJ UPDATED 12/5/14. PE
PIT46042008-04-23. Service bulletin. TURN SIGNALS FLASH FAST AFTER FACTORY BOX REMOVED. *NJ UPDATED 8/25/08. *PE
41312007-12-10. Service bulletin. RIGHT FRONT TURN SIGNAL INOPERATIVE. *NJ
0708420132007-11-02. Service bulletin. TURN SIGNAL IN CAMPER STYLE OUTSIDE REARVIEW MIRROR (RPO DPN) DOES NOT ILLUMINATE TURN SIGNAL FLASH (REPLACE UPPER MIRROR GLASS) *NJ
41812007-01-26. Service bulletin. TURN SIGNAL FLASHES FAST. *KB