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 MANUALSGMC2011SAVANA SPECIAL 4.8 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 23 (ENGINE COOLING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2011 GMC Savana Special 4.8 A
Diagnostic Code Index
2011 GMC Savana Special 4.8 ASECTION Diagnostic Code Index
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 GMC Savana Special, 2010 GMC Savana Camper Special, 2010 GMC Savana, 2010 Chevrolet RV Cutaway, and 2010 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC P00B3 or P00B4 | P00B3: Radiator Coolant Temperature (RCT) Sensor Circuit Low Voltage P00B4: Radiator Coolant Temperature (RCT) Sensor Circuit High Voltage |
| DTC P00B6 | P00B6: Radiator Coolant Temperature (RCT) - Engine Coolant Temperature (ECT) Correlation |
| DTC P0480 | P0480: Cooling Fan Speed Output Circuit |
| DTC P0483 or P0493 | P0483: Cooling Fan System Performance |
| DTC P0495 | P0495: Cooling Fan Speed High |
| DTC P0526 | P0526: Cooling Fan Speed Sensor Circuit |
| DTC P1258 | P1258: Engine Coolant Overtemperature - Protection Mode Active |
| DTC P2181 | P2181: Engine Cooling System Performance |
RENDER: 1.0x
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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.