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Service bulletin 020604030

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 id634778
Published by NHTSA2002-10-09
Manufacturer's number020604030
Manufacturer's date2002-06-01
NHTSA componentELECTRICAL SYSTEM:IGNITION:MODULE

NHTSA's summary

SUBJECT REGARDING REVISED DIAGNOSTIC TROUBLE CODE P0087 TABLE. *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

P0087

Vehicles listed
CHEVROLET SILVERADO2001
GMC SIERRA2001

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
055002024-02-12. Service bulletin. 05500 IGNITION DISTRIBUTOR SYSTEM CORROSION INSPECT / REPLACE
055002016-05-19. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
055002005-11-10. Service bulletin. THE IGNITION DISTRIBUTOR CAP AND ROTOR MAY CORRODE AND CAUSE IGNITION SYSTEM FAILURE. A PRODUCT EMISSION RECALL TO INSPECT / REPLACE THE DISTRIBUTOR IGNITION SYSTEM. *TT GM PARTS BULLETINS & INFORMATION. *TT
0206040322002-10-09. Service bulletin. THIS BULLETIN IS BEING ISSUED TO REVISE THE DIAGNOSTIC TROUBLE CODE P0088. *TT
0206040052002-04-02. Service bulletin. SUBJECT REGARDING REVISED DIAGNOSTIC TROUBLE CODE P1221 SERVIC EMANUAL UDPATE. *TT