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 MANUALSCHEVROLET2000C TAHOE 2WD V8-4.8L VIN VREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTRANSMISSION POSITION SENSOR/SWITCHDESCRIPTION AND OPERATION
2000 Chevrolet C Tahoe 2WD V8-4.8L VIN V
Transmission Position Sensor/Switch: Description and Operation
2000 Chevrolet C Tahoe 2WD V8-4.8L VIN VSECTION Description and Operation
PRND Switch (Transmission Range Switch)
The Transmission Range Switch (PRND) switch is mounted to the side of the transaxle and is part of the Park Neutral Position (PNP) switch. The PRND switch is used by the PCM to indicate the actual gear selected. The PRND is made up of 4 individual switches. The scan tool indicates ON or OFF for each switch depending on the position of the gear selector lever. The combination of ONs and OFFs will indicate the gear selected. If the combination of ONs and OFFs is invalid, a DTC is set.
The Transmission Range Switch (PRND) switch is mounted to the side of the transaxle and is part of the Park Neutral Position (PNP) switch. The PRND switch is used by the PCM to indicate the actual gear selected. The PRND is made up of 4 individual switches. The scan tool indicates ON or OFF for each switch depending on the position of the gear selector lever. The combination of ONs and OFFs will indicate the gear selected. If the combination of ONs and OFFs is invalid, a DTC is set.
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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.