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 MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 807 (LIGHTING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESSTOP LAMPS MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Circuit/System Verification
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, observe the scan tool Brake Lamp Cmd. parameter while applying and releasing the brake pedal. The parameter should change between ON and Off as the brake pedal is applied and released.
- If the parameter does not change between the selected states, refer to Brake Pedal Position Sensor Malfunction .
- With a scan tool, command the LR Stop/Turn Signal Lamp ON and OFF. The left rear turn signal should turn ON and OFF when changing between the commanded states.
- If the left rear stop lamp does not turn ON and OFF as commanded, refer to Stop Lamps Malfunction .
- With a scan tool, command the RR Stop/Turn Signal Lamp ON and OFF. The right rear turn signal should turn ON and OFF when changing between the commanded states.
- If the right rear stop lamp does not turn ON and OFF as commanded, refer to Stop Lamps Malfunction .
- Turn the center high mounted stop lamp ON and OFF by applying and releasing the brake pedal. The center high mounted stop lamp should turn ON and OFF as the brake pedal is applied and released.
- If the center high mounted stop lamp does not turn ON and OFF as selected, refer to Center High Mounted Stop Lamp Malfunction .
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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.