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 MANUALSCHEVROLET2009UPLANDER LT, 3.9 MREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTILOCK BRAKE SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C0163-C0165CIRCUIT/SYSTEM TESTING
2009 Chevrolet Uplander LT, 3.9 M
Circuit/System Testing
2009 Chevrolet Uplander LT, 3.9 MSECTION Circuit/System Testing
- Verify that DTC P0573, C0277, C0278, or C0283 is not set.
- If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle
- Ignition ON, observe the operation of the stop lamps and the center high mounted stop lamp (CHMSL) while pressing and depressing the brake pedal. The stop lamps and the CHMSL should go ON and OFF.
- If the stop lamps or the CHMSL is always OFF refer to Stop Lamps Malfunction .
- Verify the calibration of the brake pedal position sensor, refer to Brake Pedal Position Sensor Calibration .
- Verify DTC C0163-C0165 is not set.
- If DTC is set, replace the BPMV and verify DTC does not reset. If DTC resets, replace the EBCM.
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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.