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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2164 (SEAT HEATING SYSTEM AND SEAT COOLING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Diagnostic Code Index
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Diagnostic Code Index
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1925 or B2170 (w/o HP2 with Memory) | DTC B1925 02 Left Seat Heater Cushion Sensor Circuit Short to Ground DTC B1925 05 Left Seat Heater Cushion Sensor Circuit Short to Battery or Open DTC B2170 02 Right Seat Heater Cushion Sensor Circuit Short to Ground DTC B2170 05 Right Seat Heater Cushion Sensor Circuit Short to Battery or Open |
| DTC B1925 or B2170 (Rear Seat) | DTC B1925 02 Left Seat Cushion Heater Sensor Circuit Shorted to Ground DTC B1925 05 Left Seat Cushion Heater Sensor Circuit Shorted to Battery or Open DTC B2170 02 Right Seat Heater Cushion Sensor Circuit Shorted to Ground DTC B2170 05 Right Seat Heater Cushion Sensor Circuit Shorted to Battery or Open |
| DTC B1925 or B2170 (HP2 or Dealer Installed, w/o Memory) | DTC B1925 02 Left Seat Heater Cushion Sensor Circuit Shorted to Ground DTC B1925 05 Left Seat Heater Cushion Sensor Circuit Shorted to Battery or Open DTC B2170 02 Right Seat Heater Cushion Sensor Circuit Shorted to Ground DTC B2170 05 Right Seat Heater Cushion Sensor Circuit Shorted to Battery or Open |
| DTC B1935 or B2180 (w/o HP2 with Memory) | DTC B1935 04 Left Seat Back Heater Circuit Open DTC B1935 0A Left Seat Back Heater Circuit Rate of Change Below Threshold DTC B1935 0B Left Seat Back Heater Circuit Current Above Threshold DTC B1935 0C Left Seat Back Heater Circuit Current Below Threshold DTC B1935 0D Left Seat Back Heater Circuit Resistance Above Threshold DTC B1935 0E Left Seat Back Heater Circuit Resistance Below Threshold DTC B1935 1F Left Seat Back Heater Circuit Intermittent DTC B2180 04 Right Seat Back Heater Circuit Open DTC B2180 0A Right Seat Back Heater Circuit Rate of Change Below Threshold DTC B2180 0B Right Seat Back Heater Circuit Current Above Threshold DTC B2180 0C Right Seat Back Heater Circuit Current Below Threshold DTC B2180 0D Right Seat Back Heater Circuit Resistance Above Threshold DTC B2180 0E Right Seat Back Heater Circuit Resistance Below Threshold DTC B2180 1F Right Seat Back Heater Circuit Intermittent |
| DTC B1935 or B2180 (HP2 w/o Memory) | DTC B1935 04 Left Seat Back Heater Circuit Open DTC B1935 0A Left Seat Back Heater Circuit Rate of Change Below Threshold DTC B1935 0B Left Seat Back Heater Circuit Current Above Threshold DTC B1935 0C Left Seat Back Heater Circuit Current Below Threshold DTC B1935 0D Left Seat Back Heater Circuit Resistance Above Threshold DTC B1935 0E Left Seat Back Heater Circuit Resistance Below Threshold DTC B1935 1F Left Seat Back Heater Circuit Intermittent DTC B2180 04 Right Seat Back Heater Circuit Open DTC B2180 0A Right Seat Back Heater Circuit Rate of Change Below Threshold DTC B2180 0B Right Seat Back Heater Circuit Current Above Threshold DTC B2180 0C Right Seat Back Heater Circuit Current Below Threshold DTC B2180 0D Right Seat Back Heater Circuit Resistance Above Threshold DTC B2180 0E Right Seat Back Heater Circuit Resistance Below Threshold DTC B2180 1F Right Seat Back Heater Circuit Intermittent |
| DTC B1935 or B2180 (Dealer Installed) | DTC B1935 04 Left Seat Back Heater Circuit Open DTC B1935 0A Left Seat Back Heater Circuit Rate of Change Below Threshold DTC B1935 0B Left Seat Back Heater Circuit Current Above Threshold DTC B1935 0C Left Seat Back Heater Circuit Current Below Threshold DTC B1935 0D Left Seat Back Heater Circuit Resistance Above Threshold DTC B1935 0E Left Seat Back Heater Circuit Resistance Below Threshold DTC B1935 1F Left Seat Back Heater Circuit Intermittent DTC B2180 04 Right Seat Back Heater Circuit Open DTC B2180 0A Right Seat Back Heater Circuit Rate of Change Below Threshold DTC B2180 0B Right Seat Back Heater Circuit Current Above Threshold DTC B2180 0C Right Seat Back Heater Circuit Current Below Threshold DTC B2180 0D Right Seat Back Heater Circuit Resistance Above Threshold DTC B2180 0E Right Seat Back Heater Circuit Resistance Below Threshold DTC B2180 1F Right Seat Back Heater Circuit Intermittent |
| DTC B2345 (w/o HP2 with Memory) | DTC B2345 00 Seat Heater Disable Circuit DTC B2345 13 Seat Heater Elements Temperature Above Threshold DTC B2345 42 Seat Heater Elements Current Sensing Calibration Not Programmed DTC B2345 4B Seat Heater Elements Current Sensing Calibration Out of Range |
| DTC B2345 (HP2 w/o Memory) | DTC B2345 00 Seat Heater Disable Circuit DTC B2345 13 Seat Heater Elements Temperature Above Threshold DTC B2345 42 Seat Heater Elements Current Sensing Calibration Not Programmed DTC B2345 4B Seat Heater Elements Current Sensing Calibration Out of Range |
| DTC B2345 (Rear Seat) | DTC B2345 00 Seat Heater Disable Circuit DTC B2345 13 Seat Heater Disable Circuit Voltage Low / High Temperature DTC B2345 42 Seat Heater Disable Circuit Calibration Data Set Not Programmed DTC B2345 4B Seat Heater Disable Circuit Calibration Not Learned |
| DTC B2345 (Dealer Installed) | DTC B2345 00 Seat Heater Disable Circuit DTC B2345 13 Seat Heater Elements Temperature Above Threshold DTC B2345 42 Seat Heater Elements Current Sensing Calibration Not Programmed DTC B2345 4B Seat Heater Elements Current Sensing Calibration Out of Range |
| DTC B2425 or B2430 (w/o HP2 with Memory) | DTC B2425 04 Left Seat Heater Cushion Circuit Open DTC B2425 0A Left Seat Heater Cushion Circuit Rate of Change Below Threshold DTC B2425 0B Left Seat Heater Cushion Circuit Current Above Threshold DTC B2425 0C Left Seat Heater Cushion Circuit Current Below Threshold DTC B2425 0D Left Seat Heater Cushion Circuit Resistance Above Threshold DTC B2425 0E Left Seat Heater Cushion Circuit Resistance Below Threshold DTC B2425 1F Left Seat Heater Cushion Circuit Intermittent DTC B2430 04 Right Seat Heater Cushion Circuit Open DTC B2430 0A Right Seat Heater Cushion Circuit Rate of Change Below Threshold DTC B2430 0B Right Seat Heater Cushion Circuit Current Above Threshold DTC B2430 0C Right Seat Heater Cushion Circuit Current Below Threshold DTC B2430 0D Right Seat Heater Cushion Circuit Resistance Above Threshold DTC B2430 0E Right Seat Heater Cushion Circuit Resistance Below Threshold DTC B2430 1F Right Seat Heater Cushion Circuit Intermittent |
| DTC B2425 or B2430 (HP2 w/o Memory) | DTC B2425 04 Left Seat Heater Cushion Circuit Open DTC B2425 0A Left Seat Heater Cushion Circuit Rate of Change Below Threshold DTC B2425 0B Left Seat Heater Cushion Circuit Current Above Threshold DTC B2425 0C Left Seat Heater Cushion Circuit Current Below Threshold DTC B2425 0D Left Seat Heater Cushion Circuit Resistance Above Threshold DTC B2425 0E Left Seat Heater Cushion Circuit Resistance Below Threshold DTC B2425 1F Left Seat Heater Cushion Circuit Intermittent DTC B2430 04 Right Seat Heater Cushion Circuit Open DTC B2430 0A Right Seat Heater Cushion Circuit Rate of Change Below Threshold DTC B2430 0B Right Seat Heater Cushion Circuit Current Above Threshold DTC B2430 0C Right Seat Heater Cushion Circuit Current Below Threshold DTC B2430 0D Right Seat Heater Cushion Circuit Resistance Above Threshold DTC B2430 0E Right Seat Heater Cushion Circuit Resistance Below Threshold DTC B2430 1F Right Seat Heater Cushion Circuit Intermittent |
| DTC B2425 or B2430 (Rear Seat) | DTC B2425 04 Left Seat Heater Cushion Circuit Open DTC B2425 0A Left Seat Heater Cushion Circuit Rate of Change Below Threshold DTC B2425 0B Left Seat Heater Cushion Circuit Current Above Threshold DTC B2425 0C Left Seat Heater Cushion Circuit Current Below Threshold DTC B2425 0D Left Seat Heater Cushion Circuit Resistance Above Threshold DTC B2425 0E Left Seat Heater Cushion Circuit Resistance Below Threshold DTC B2425 1F Left Seat Heater Cushion Circuit Intermittent DTC B2430 04 Right Seat Heater Cushion Circuit Open DTC B2430 0A Right Seat Heater Cushion Circuit Rate of Change Below Threshold DTC B2430 0B Right Seat Heater Cushion Circuit Current Above Threshold DTC B2430 0C Right Seat Heater Cushion Circuit Current Below Threshold DTC B2430 0D Right Seat Heater Cushion Circuit Resistance Above Threshold DTC B2430 0E Right Seat Heater Cushion Circuit Resistance Below Threshold DTC B2430 1F Right Seat Heater Cushion Circuit Intermittent |
| DTC B2425 or B2430 (Dealer Installed) | DTC B2425 04 Left Seat Heater Cushion Circuit Open DTC B2425 0A Left Seat Heater Cushion Circuit Rate of Change Below Threshold DTC B2425 0B Left Seat Heater Cushion Circuit Current Above Threshold DTC B2425 0C Left Seat Heater Cushion Circuit Current Below Threshold DTC B2425 0D Left Seat Heater Cushion Circuit Resistance Above Threshold DTC B2425 0E Left Seat Heater Cushion Circuit Resistance Below Threshold DTC B2425 1F Left Seat Heater Cushion Circuit Intermittent DTC B2430 04 Right Seat Heater Cushion Circuit Open DTC B2430 0A Right Seat Heater Cushion Circuit Rate of Change Below Threshold DTC B2430 0B Right Seat Heater Cushion Circuit Current Above Threshold DTC B2430 0C Right Seat Heater Cushion Circuit Current Below Threshold DTC B2430 0D Right Seat Heater Cushion Circuit Resistance Above Threshold DTC B2430 0E Right Seat Heater Cushion Circuit Resistance Below Threshold DTC B2430 1F Right Seat Heater Cushion Circuit Intermittent |
| DTC B2435 or B2440 (w/o HP2 with Memory) | DTC B2435 02 Left Seat Back Heater Sensor Circuit Short to Ground DTC B2435 05 Left Seat Back Heater Sensor Circuit Short to Battery or Open DTC B2440 02 Right Seat Back Heater Sensor Circuit Short to Ground DTC B2440 05 Right Seat Back Heater Sensor Circuit Short to Battery or Open |
| DTC B2435 or B2440 (HP2 or Dealer Installed w/o Memory) | DTC B2435 02 Left Seat Back Heater Sensor Circuit Short to Ground DTC B2435 05 Left Seat Back Heater Sensor Circuit Short to Battery or Open DTC B2440 02 Right Seat Back Heater Sensor Circuit Short to Ground DTC B2440 05 Right Seat Back Heater Sensor Circuit Short to Battery or Open |
| DTC B2508 or B2509 (w/o HP2 with Memory) | DTC B2508 01 Seat Heater Relay Circuit Short to Battery DTC B2508 02 Seat Heater Relay Circuit Short to Ground |
| DTC B2508 or B2509 (HP2 w/o Memory) | DTC B2508 01 Seat Heater Relay Circuit Short to Battery DTC B2508 02 Seat Heater Relay Circuit Short to Ground |
| DTC B2508 or B2509 (Rear Seat) | DTC B2508 01 Seat Heater Relay Circuit Short to Battery DTC B2508 02 Seat Heater Relay Circuit Short to Ground |
| DTC B2508 or B2509 (Dealer Installed) | DTC B2508 01 Seat Heater Relay Circuit Short to Battery DTC B2508 02 Seat Heater Relay Circuit Short to Ground |
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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.