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Service bulletin 990603004A

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 id608070
Published by NHTSA1999-11-02
Manufacturer's number990603004A
Manufacturer's date1999-07-01
Replaces990603004
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

SOME CUSTOMERS MAY COMMENT ABOUT THE HORN SOUNDING AND A NO START CONDITION DUE TO WATER INTRUSION INTO THE ACCESSORY WIRING JUNCTION BLOCK. *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

Vehicles listed
CHEVROLET S SERIES1998
CHEVROLET T SERIES1998
GMC S SERIES1998
GMC T SERIES1998
OLDSMOBILE BRAVADA1998

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

Recalls for the same vehicles and component
20012632001-11-01. Electrical

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
PIP4723D2020-02-10. Service bulletin. This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
PIP4723C2019-04-08. Service bulletin. This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
PIP4723B2017-08-15. Service bulletin. This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
37772006-01-06. Service bulletin. FUEL AND TEMPERATURE GAUGE INOPERATIVE, LOW FUEL AND BATTERY LIGHT ON, PRNDL INOPERATIVE. *TT
31302004-11-04. Service bulletin. INSTRUMENT CLUSTER PRNDL INOPERATIVE AND OR BATTERY LIGHT ON. *SC
3031A2004-10-14. Service bulletin. DRIVER INFORMATION CENTER (DIC) STAYS IN BULB CHECK. *TT
2502022002-04-09. Service bulletin. INFORMATION ON REPLACING CORRODED TRAILER PRE-WIRE HARNESS AT THE REAR BUMPER. *TT
0106040392001-11-01. Service bulletin. SOME VEHICLES MAY EXHIBIT A SERVICE ENGINE SOON LAMP ON, MALFUNCTION INDICATOR LAMP ILLUMINATES INTERMITTENTLY, ANTI-LOCK BRAKE SYSTEM WARNING LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODES SET, AND / OR BLOWN FUSES. *TT
010856001A2001-10-25. Service bulletin. SOME CUSTOMERS MAY COMMENT THAT THE SECURITY LAMP ILLUMINATES WHILE DRIVING; ENGINE CRANKS BUT WILL NOT START; AND / OR THE ENGINE STARTS THEN STALLS AND THE SECURITY LAMP IS FLASHING. *TT
1110002001-03-22. Service bulletin. INFORMATION ON THE PULLING THE NEGATIVE BATTERY CABLE BEFORE PULLING THE DRL RELAY WHEN PERFORMING CAMPAIGN 00043 DRL NONCOMPLIANCE ON 1998 GM AND CHEVROLET T-PICKUP AND UTILITIES WITH THE ZR2 HIGH RIDER PERFORMANCE PACKAGE. *TT