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 829 (HYDRAULIC BRAKE SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Diagnostic Code Index
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Diagnostic Code Index
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.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC C0267 | C0267 00: Low Brake Fluid Indicated |
| DTC C0299 | C0299 5A: Brake Booster Performance Plausibility |
| DTC C1100 | C1100 00: Brake Booster Vacuum Sensor Performance C1100 01: Brake Booster Vacuum Sensor Signal Circuit Shorted to Battery C1100 02: Brake Booster Vacuum Sensor Signal Circuit Short to Ground C1100 08: Brake Booster Vacuum Sensor Circuit Signal Invalid C1100 09: Brake Booster Vacuum Sensor Change Above Threshold |
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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.