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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSPONTIAC1998FIREBIRD V8-5.7L VIN GREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTRANSMISSION POSITION SENSOR/SWITCHDESCRIPTION AND OPERATION
1998 Pontiac Firebird V8-5.7L VIN G
Transmission Position Sensor/Switch: Description and Operation
1998 Pontiac Firebird V8-5.7L VIN GSECTION Description and Operation
The PNP switch indicates to the PCM when the transmission is in park, neutral, or drive. This information is used for the EGR and IAC valve operation. The PNP switch is part of the neutral / start and backup light switch assembly. Refer to System Diagnostic Table for the Park/Neutral Position Switch for further information. Testing and Inspection
Idle quality will be affected if the vehicle is driven with the PNP switch disconnected. Having the switch disconnected may also cause a VSS DTC to set.
Idle quality will be affected if the vehicle is driven with the PNP switch disconnected. Having the switch disconnected may also cause a VSS DTC to set.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.