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 MANUALSCHEVROLET1992S10/T10 P/U 4WD V6-173 2.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSVEHICLE SPEED SENSORDESCRIPTION AND OPERATION
1992 Chevrolet S10/T10 P/U 4WD V6-173 2.8L
Vehicle Speed Sensor: Description and Operation
1992 Chevrolet S10/T10 P/U 4WD V6-173 2.8LSECTION Description and Operation
Vehicle Speed Sensor Circuit:
VSS 2WD Manual Transmission:
VSS 2WD (A/TRANS.) VEHICLE SPEED SENSOR:
PURPOSE
The Vehicle Speed Sensor (VSS) provides information to the ECM for control of:
- Transmission Torque Converter Clutch (TCC)
- Speedometer
- Odometer
- Cruise control
CONSTRUCTION
The VSS is made up of:
- Permanent Magnet (PM) generator (coil), which is mounted on the transmission.
- Rotor (tooth), which is mounted on the output shaft in the transmission.
- VSS Buffer, which is mounted to the ECM bracket.
OPERATION
The VSS is a Permanent Magnet (PM) generator that produces a pulsing Alternating Current (AC) voltage as each rotor tooth nears the coil. As the vehicle speed increases, the number of AC voltage pulses increase and is converted by the ECM to MPH (KM/H). A VSS buffer is incorporated into the ECM for operating the instrument panel speedometer and odometer.
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.