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Service bulletin 020846005

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 id634678
Published by NHTSA2002-10-04
Manufacturer's number020846005
Manufacturer's date2002-05-01
NHTSA componentELECTRICAL SYSTEM:IGNITION:MODULE

NHTSA's summary

SUBJECT REGARDNG THE ADDITION OF DIAGNOSTIC TROUBLE CODE U1500 FOR GENERATION 4 ONSTAR. *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

Electrical system, Ignition

Trouble codes named

U1500

Vehicles listed
BUICK CENTURY2002
BUICK LESABRE2002
BUICK REGAL2002
CADILLAC DEVILLE2002
CADILLAC SEVILLE2002
CHEVROLET IMPALA2002
CHEVROLET MONTE CARLO2002
CHEVROLET TRAILBLAZER2002
GMC ENVOY2002
OLDSMOBILE AURORA2002
OLDSMOBILE BRAVADA2002
OLDSMOBILE INTRIGUE2002
PONTIAC BONNEVILLE2002

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

Recalls for the same vehicles and component
14V4000002014-07-03. ELECTRICAL SYSTEM:IGNITION
14V3550002014-06-23. ELECTRICAL SYSTEM:IGNITION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
14350D2024-01-16. Service bulletin. Unintended Ignition Key Rotation
14299D2024-01-16. Service bulletin. Unintended Ignition Key Rotation
14350B2023-12-04. Service bulletin. Unintended Ignition Key Rotation
14350A2023-12-04. Service bulletin. Unintended Ignition Key Rotation
14299A2023-12-04. Service bulletin. Unintended Ignition Key Rotation
0507300212005-11-05. Service bulletin. IGNITION KEY WILL NOT REMOVE FROM IGNITION LOCK CYLINDER. *TT
32162004-12-02. Service bulletin. ERRATIC OPERATION OF PERSONALIZATION WITH IGNITION CYCLE. *EH
30642004-11-17. Service bulletin. DELAYED CRANK, MAY BE NECESSARY TO HOLD KEY IN START SEVERAL SECONDS UNTIL START. *TT
30092004-08-25. Service bulletin. SERVICE VME - IP TOP PAD TO TRIM PLATE GAP. *MJ
00214A2003-11-19. Service bulletin. DELAYED CRANK, MAY BE NECESSARY TO HOLD KEY IN START SEVERAL SECONDS UNTIL STARTS. *TT