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 MANUALSCHEVROLET1994C 2500 SUBURBAN 2WD V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORSERVICE AND REPAIR
1994 Chevrolet C 2500 Suburban 2WD V8-350 5.7L
Throttle Position Sensor: Service and Repair
1994 Chevrolet C 2500 Suburban 2WD V8-350 5.7LSECTION Service and Repair
Throttle Position (TP) Sensor:
REMOVAL:
- Disconnect electrical connectors.
- Remove the TPS attaching screw assemblies and retainer, (if applicable).
- Remove TPS from throttle body assembly.
NOTE: The TPS is an electrical component and must not be soaked in any liquid cleaner or solvent, as damage may result.
INSTALLATION:
- Install TPS, with seal, to throttle body assembly, while lining up TPS lever with TPS drive lever on throttle body.
- Install the two attaching screw assemblies. Tighten screw assemblies to 2.0 Nm (18.0 lb-in).
- Install electrical connector to TPS.
- Check for TPS output as follows:
- Connect an ALDL scanner to read TPS output voltage.
- With ignition ON and engine stopped, TPS voltage should be less than 1.25 volts. If more than 1.25 volts, replace TPS.
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.