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 2WD V6-173 2.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSSHIFT LIGHTDESCRIPTION AND OPERATION
1992 Chevrolet S10/T10 P/U 2WD V6-173 2.8L
Shift Light: Description and Operation
1992 Chevrolet S10/T10 P/U 2WD V6-173 2.8LSECTION Description and Operation
Manual Transmission Shift Light Circuit:
PURPOSE
The Manual Transmission Shift Light provides a display which indicates to the driver the optimum fuel economy point for upshifting the manual transmission based on engine speed and load.
OPERATION
Activation of the control module driver turns the lamp "ON". The Shift Light will stay "ON" for up to 5 seconds, so as to urge the driver to shift-up. The control module uses information from the following inputs to control the shift light:
- Engine Coolant Temperature (ECT) sensor.
- Throttle Position (TP) sensor.
- Vehicle Speed Sensor (VSS).
- Engine RPM.
The Shift Light will dim slightly when the headlights and/or parking lights are turned "ON". This is to give better driver visibility through the windshield.
LOCATION
The display lamp is on instrument panel.
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.