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 11 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURES (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)DIAGNOSTIC CODE INDEX (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)
2011 GMC Savana Special 4.8 A
Diagnostic Code Index (Battery, Charging System And Starting System)
2011 GMC Savana Special 4.8 ASECTION Diagnostic Code Index (Battery, Charging System And Starting System)
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 B1325 | B1325 03: Device Power 1 Circuit Voltage Below Threshold B1325 07: Device Power 1 Circuit Voltage Above Threshold B1325 4A: Device Power 1 Circuit Checksum Error |
| DTC B1424 (TDM) | B1424: Device 1 Voltage Low |
| DTC B1424 (Coolant Heater) | B1424: Device 1 Voltage Low |
| DTC B1425 | B1425: Device 1 Voltage High |
| DTC B1439 | B1439: Intermittent Device Voltage Range Performance |
| DTC B1516 | B1516 08: Battery Current Sensor Signal Invalid B1516 66: Battery Current Sensor Wrong Mounting Position |
| DTC B1517 | B1517 03: Battery Voltage Below Threshold B1517 07: Battery Voltage Above Threshold B1517 5A: Battery Voltage Plausibility Failure |
| DTC B1527 | B1527: High Parasitic Load Detected |
| DTC P0562 (ECM) | P0562: System Voltage Low |
| DTC P0562 (FSCM) | P0562: System Voltage Low - FPCM |
| DTC P0563 (ECM) | P0563: System Voltage High |
| DTC P0563 (FSCM) | P0563: System Voltage High - FPCM |
| DTC P0615 | P0615: Starter Relay Control Circuit |
| DTC P0621 (DIESEL) | P0621: Charge Indicator Control Circuit |
| DTC P0621 (GAS) | P0621: Generator L-Terminal Circuit |
| DTC P0622 | P0622: Generator F-Terminal Circuit |
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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.