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 MANUALSCHEVROLET1999EXPRESS 1/2 TON VAN V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORDESCRIPTION AND OPERATIONTP SENSOR OUTPUT
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
TP Sensor Output
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION TP Sensor Output
This check should be performed when TP sensor attaching parts have been replaced. A scan tool can be used to read the TP signal output voltage.
1. Connect digital voltmeter J 39200 from TP sensor connector terminal B (BLK wire) to terminal C (DK Blue wire). Jumpers for terminal access can be made using terminals 1214836 and 12014837.
2. With ignition ON, engine stopped, the TP signal voltage should be less than 1.25V if more than 1.25V verify free throttle movement. If still more than 1.25V, replace TP sensor.
3. Remove the voltmeter and jumpers, reconnect the TP sensor connector to the sensor.
1. Connect digital voltmeter J 39200 from TP sensor connector terminal B (BLK wire) to terminal C (DK Blue wire). Jumpers for terminal access can be made using terminals 1214836 and 12014837.
2. With ignition ON, engine stopped, the TP signal voltage should be less than 1.25V if more than 1.25V verify free throttle movement. If still more than 1.25V, replace TP sensor.
3. Remove the voltmeter and jumpers, reconnect the TP sensor connector to the sensor.
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.