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 MANUALSCHEVROLET1999LUMINA V6-3.8L VIN KREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTRANSMISSION POSITION SENSOR/SWITCHADJUSTMENTS
1999 Chevrolet Lumina V6-3.8L VIN K
Transmission Position Sensor/Switch: Adjustments
1999 Chevrolet Lumina V6-3.8L VIN KSECTION Adjustments
^ Tools Required
- J 41545 Park/Neutral Switch Alignment Tool
If a new PNP switch has been rotated and the pin is broken or if using an old PNP switch, adjust the PNP switch.
1. Place the shift shaft in the Neutral position.
2. Use the J 41545 to align the slots of the PNP switch to the Neutral position.
3. Align the flats of the shift shaft to the flats in the PNP switch.
4. Install the PNP switch to the mounting boss.
Important: If the PNP switch bolt holes do not align with the mounting boss on the transaxle, verify that the shaft is in the Neutral position.
5. Assemble the PNP switch mounting bolts loosely.
6. Use the J 41545 to align the PNP switch.
Notice: Refer to Fastener Notice in Service Precautions.
7. Install the PNP switch mounting bolts.
Tighten the PNP switch mounting bolts to 25 Nm (18 ft. lbs.).
- J 41545 Park/Neutral Switch Alignment Tool
If a new PNP switch has been rotated and the pin is broken or if using an old PNP switch, adjust the PNP switch.
1. Place the shift shaft in the Neutral position.
2. Use the J 41545 to align the slots of the PNP switch to the Neutral position.
3. Align the flats of the shift shaft to the flats in the PNP switch.
4. Install the PNP switch to the mounting boss.
Important: If the PNP switch bolt holes do not align with the mounting boss on the transaxle, verify that the shaft is in the Neutral position.
5. Assemble the PNP switch mounting bolts loosely.
6. Use the J 41545 to align the PNP switch.
Notice: Refer to Fastener Notice in Service Precautions.
7. Install the PNP switch mounting bolts.
Tighten the PNP switch mounting bolts to 25 Nm (18 ft. lbs.).
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.