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 MANUALSCHEVROLET1998EXPRESS 1 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORSERVICE AND REPAIR
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN R
Throttle Position Sensor: Service and Repair
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN RSECTION Service and Repair
Throttle Position Sensor Electrical Connector:
REMOVAL PROCEDURE
CAUTION: The Throttle Position (TP) sensor is an electrical component. Do not soak the TP sensor in any liquid cleaner or solvent, as damage may result.
1. Disconnect the electrical connector releasing locking tab.
2. Remove the two TP sensor attaching screw assemblies.
3. Remove the TP sensor from throttle body assembly.
INSTALLATION PROCEDURE
1. With throttle valve closed, install the TP sensor on the throttle shaft. Rotate counterclockwise to align mounting holes.
2. Install the two TP sensor attaching screw assemblies.
Tighten
^ Tighten the screw assemblies to 2.0 Nm (18.0 lb. in.).
3. Connect the electrical connector.
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.