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Service bulletins for the 2003 Chevrolet Express

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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
DOR-R3U4D-112016-11-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. ALL APPLICABLE VEHICLE APPLICATIONS ARE WITHOUT ELECTRONIC ACCESSORY CONTROL SYSTEM OPTION. THIS COMMUNICATION IS TO RETURN UNSOLD INVENTORY BECAUSE SOME PRODUCT SOLD IN 2016 MAY NOT HAVE COIL HARNESS WOUND IN A CENTERED CONDITION AS AN ASSEMBLY AID. IF INSTALLER DOES NOT CENTER THE ROTATIONS OF THE ASSEMBLY DURING REPLACEMENT PROCESS IN ACCORDANCE WITH APPLICABLE ALLDATA SERVICE AND REPAIR PROCEDURE, POST-INSTALL TURNING OF THE STEERING WHEEL WILL TRIGGER THE AIR BAG WARNING LIGHT OF THE VEHICLE.
PIT5485A2016-11-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN, IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE.
PIT5485B2016-11-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE, TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE.
PIC4935E2016-10-25. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE. WHEN PERFORMING BATTERY PARASITIC DRAIN TEST, THERE MAY BE SOME CONFUSION AS TO WHAT THE NORMAL POWER CONSUMPTION READING SHOULD BE FROM THE ONSTAR SYSTEM.
PIC-4935-E2016-08-17. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE. WHEN PERFORMING BATTERY PARASITIC DRAIN TEST, THERE MAY BE SOME CONFUSION AS TO WHAT THE NORMAL POWER CONSUMPTION READING SHOULD BE FROM THE ONSTAR SYSTEM.
PIC-5050-A2016-08-17. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON REPAIRING THE CONCERN. A CUSTOMER MAY IDENTIFY A CONCERN OF UNABLE TO REACTIVATE A VEHICLE'S ONSTAR THAT HAS BEEN PREVIOUSLY DISABLED BY ONSTAR. DEALER IS TO CALL GENERAL MOTORS TECHNICAL ASSISTANCE CENTER FOR FURTHER ASSISTANCE IF THE CONCERN IS STILL PRESENT.
08089-B2009-02-10. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). GENERAL MOTORS CORP: SPECIAL COVERAGE ADJUSTMENT; ANALOG ONSTAR DEACTIVATION. *PE UPDATED 2/17/09. *PE
070952008-01-10. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. ENGINE COMPARTMENT FUSE BLOCK COVER ON SOME 2003-2007 CHEVROLET EXPRESS AND GMC SAVANA VEHICLES MAY BREAK WHEN THE COVER IS REMOVED, ALLOWING WATER AND ROAD CONTAMINATES TO ENTER THE FUSE BLOCK. *NJ
38152006-01-25. Service bulletin. ELECTRICAL SYSTEM:WIRING. INSTALLING TRAILER WIRING HARNESS WITHOUT THE Z82 OPTION. *TT
35142006-01-25. Service bulletin. ELECTRICAL SYSTEM. HARNESS LOCATION FOR TRAILER BRAKE INSTALLATION RPO Z82 AND/OR UY7. *TT
33402005-10-27. Service bulletin. ELECTRICAL SYSTEM. INSTRUMENT PANEL CLUSTER WILL NOT ILLUMINATE IN DRL MODE. *TT
34272005-10-21. Service bulletin. ELECTRICAL SYSTEM. ADDITIONAL DIAGNOSTIC INFORMATION DTC P0757. *TT
0408450042005-03-09. Service bulletin. ELECTRICAL SYSTEM. VARIOUS ELECTRICAL CONCERNS AIR BAG LIGHT ON ANTILOCK BRAKE LIGHT ON SECURITY LIGHT ON CHECK ENGINE LIGHT ON DTCS SET GAUGES INOPERATIVE. *EH
32382004-12-04. Service bulletin. ELECTRICAL SYSTEM:IGNITION. PRNDL LIGHT UP WITH KEY OUT OF IGNITION AND DOOR OPEN. *EH
30892004-10-04. Service bulletin. ELECTRICAL SYSTEM. SERVICE ENGINE SOON LIGHT AND REDUCED ENGINE POWER WITH A DIAGNOSTIC TROUBLE CODE P1516. DIAGNOSTIC TROUBLE CODES P0120, P0220, P1514, P1515, P1518 AND P2135 MAY ALSO BE PRESENT. *TT
006322004-07-06. Service bulletin. ELECTRICAL SYSTEM. 4.3L L35 ENGINE-DIAGNOSTIC TROUBLE CODE P0300 BUT NO MISFIRE CAN FELT. *MJ
01086B2004-06-09. Service bulletin. ELECTRICAL SYSTEM. DEALERS MAY COMMENT THAT THE ODOMETER HAS RESET TO 0 AFTER THE BATTERY HAS BEEN DISCONNECTED. *TT
019502004-05-25. Service bulletin. ELECTRICAL SYSTEM. ABS TELLTALE ILLUMINATED, DIAGNOSTIC TROUBLE CODE C0550 STORED IN HISTORY.*MR
017002004-04-30. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. STAMPING ERROR ON GENERATOR ASSEMBLY. SIT BULLETIN 1452615. *TT
015922004-02-27. Service bulletin. ELECTRICAL SYSTEM. 2003-2004 GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION EXPLANATION. SIT BULLETIN 1416474. *TT
01086A2003-11-18. Service bulletin. ELECTRICAL SYSTEM. DEALERS MAY COMMENT THAT THE ODOMETER HAS RESET TO 0 AFTER THE BATTERY HAS BEEN DISCONNECTED. *TT
020592003-09-13. Service bulletin. ELECTRICAL SYSTEM:IGNITION. WRONG SPARK PLUGS. *TT
020592003-03-28. Service bulletin. ELECTRICAL SYSTEM:IGNITION. VOLUNTARY EMISSION RECALL INVOLVING SPARK PLUG REPLACEMENT. *TT
020592003-02-07. Service bulletin. ELECTRICAL SYSTEM:IGNITION. SPARK PLUG REPLACEMENT. *TT

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