Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1984CAVALIER L4-121 2.0L VIN P TBIREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSCUSTOMER INTERESTIGNITION SWITCH - UNWORKABLE ACCESSORY POSITION
1984 Chevrolet Cavalier L4-121 2.0L VIN P TBI
Ignition Switch - Unworkable ACCESSORY Position
1984 Chevrolet Cavalier L4-121 2.0L VIN P TBISECTION Ignition Switch - Unworkable ACCESSORY Position
84-234
3B (IX)
Jan., 1985
Subject: IGNITION SWITCH AND/OR SHIFT LEVER UNWORKABLE ON AUTOMATIC TRANSMISSIONS WITH CONSOLE
Model and Year: 1984 CELEBRITY, CAMARO, CAVALIER, AND CITATION
TO: ALL CHEVROLET DEALERS
CONDITION
The ignition switch may become unworkable in the accessory position, and/or the shift lever will not move when excessive shift handle button loads are applied.
CAUSE
The ignition switch becomes unworkable when excessive shift handle button loads are applied while the ignition switch is in the accessory position, and the park lock cable slider is forced past the ignition switch inhibitor pin.
CORRECTION
Replace ignition switch assembly and park lock cable assembly using the following part numbers.
NOTICE: The ignition switches can be identified by a beige colored park lock inhibitor body attached to the ignition switch assembly.
Ignition Switch With Beige Colored Park Lock Inhibitor
Body Park Lock Cables
Automatic Trans-
mission Without Citation &
Tilt Wheel 7843497 Celebrity Code TR 10037700
Automatic Transmission With Tilt
Wheel 7843451 Camaro Code TS 10037701
Cavalier Code TP 10037702
3B (IX)
Jan., 1985
Subject: IGNITION SWITCH AND/OR SHIFT LEVER UNWORKABLE ON AUTOMATIC TRANSMISSIONS WITH CONSOLE
Model and Year: 1984 CELEBRITY, CAMARO, CAVALIER, AND CITATION
TO: ALL CHEVROLET DEALERS
CONDITION
The ignition switch may become unworkable in the accessory position, and/or the shift lever will not move when excessive shift handle button loads are applied.
CAUSE
The ignition switch becomes unworkable when excessive shift handle button loads are applied while the ignition switch is in the accessory position, and the park lock cable slider is forced past the ignition switch inhibitor pin.
CORRECTION
Replace ignition switch assembly and park lock cable assembly using the following part numbers.
NOTICE: The ignition switches can be identified by a beige colored park lock inhibitor body attached to the ignition switch assembly.
Ignition Switch With Beige Colored Park Lock Inhibitor
Body Park Lock Cables
Automatic Trans-
mission Without Citation &
Tilt Wheel 7843497 Celebrity Code TR 10037700
Automatic Transmission With Tilt
Wheel 7843451 Camaro Code TS 10037701
Cavalier Code TP 10037702
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.