Skyhawk L4-121 2.0L VIN P TBI (1984)
Spark Plug: All Technical Service Bulletins
Owner Vehicle and Parts Information
Owners of vehicles registered in certain northern states will be notified by letter of this Special Policy by Buick. However, all subject vehicles are
covered by this policy regardless of where they are registered or operated.
PREVIOUSLY SERVICED VEHICLES
1983-1984 Skyhawks previously serviced with the cold startability adjustment parts identified in Service Bulletin 84-6E-30 which developed a check
engine light (Code 42) can now be corrected. The check engine light in many cases is being generated by false signals to the ECM and can be corrected
by installing the correct prom identifed in the service procedure of this reissued bulletin.
PARTS INFORMATION
The parts required to perform this Special Policy modification are to be ordered from GMWDD.
To ensure these parts are obtained as soon as possible, they should be ordered from GMWDD on a CIO Order with NO special instruction code, but
order on an advise code (2).
Description
Usage
Part Number
PROM
1983
1227253
PROM
1984 w/3.18 Axle
1227255
PROM
1984 w/3.43 Axle
1227257
Spark Bypass Relay Kit
1983-84
14086983
Spark Plugs
1983-84
5614009
Sun Visor Starting Label
1983-84
14085150
