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 MANUALSGEO1991TRACKER LSI, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEMDIAGNOSISRWAL TROUBLE CODESCODE 10, STOPLIGHT SWITCH ON CONSTANTLY
1991 Geo Tracker LSi, Automatic
Code 10, Stoplight Switch On Constantly
1991 Geo Tracker LSi, AutomaticSECTION Code 10, Stoplight Switch On Constantly
- Turn ignition off. Disconnect EBCM harness connector from EBCM. Turn ignition on. Measure voltage between EBCM harness connector terminal No. 8 and ground. See Fig 1 .
- If reading is less than 10 volts, replace EBCM. If reading is 10-15 volts, replace or adjust stoplight switch or repair short to voltage in Green/White wire. See Fig 1 .
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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.