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 MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 999 (HVAC SYSTEM - AUTOMATIC)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2006 Chevrolet Suburban C2500, 6.0 U
Diagnostic Code Index
2006 Chevrolet Suburban C2500, 6.0 USECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B0158, B0163, B0173, B0178, B0509, or B0514 | Temperature Sensor Circuit Short |
| DTC B0183 or B0188 | Solar Load Sensor Circuit Short |
| DTC B0228, B0413, B0423, or B3779 | Mode Door Control Problem |
| DTC P0532 or P0533 | Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit |
| DTC P0645 | Air Conditioning (A/C) Clutch Relay Control Circuit |
| DTC P0646 or P0647 | Air Conditioning (A/C) Clutch Relay Control Circuit |
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.