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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 134 (SEAT HEATING SYSTEM & SEAT COOLING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2009 Chevrolet Tahoe Base, 4.8 C
Diagnostic Code Index
2009 Chevrolet Tahoe Base, 4.8 CSECTION Diagnostic Code Index
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 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 (With Memory, Without HP2) | B1925 02: Left Seat Heater Sensor Circuit Short to Ground B1925 05: Left Seat Heater Sensor Circuit Short to Battery or Open B2170 02: Right Seat Heater Cushion Sensor Circuit Short to Ground B2170 05: Right Seat Heater Cushion Sensor Circuit Short to Battery or Open |
| DTC B1925 or B2170 (Without Memory, With HP2) | B1925 02: Left Seat Heater Cushion Sensor Circuit Shorted to Ground B1925 05: Left Seat Heater Cushion Sensor Circuit Shorted to Battery or Open B2170 02: Right Seat Heater Cushion Sensor Circuit Shorted to Ground B2170 05: Right Seat Heater Cushion Sensor Circuit Shorted to Battery or Open |
| DTC B1925 or B2170 (Rear Heated Seat Module) | B1925 02: Left Seat Cushion Heater Sensor Circuit Shorted to Ground B1925 05: Left Seat Cushion Heater Sensor Circuit Shorted to Battery or Open B2170 02: Right Seat Heater Cushion Sensor Circuit Shorted to Ground B2170 05: Right Seat Heater Cushion Sensor Circuit Shorted to Battery or Open |
| DTC B1935 or B2180 (With Memory, Without HP2) | B1935 04: Left Seat Back Heater Circuit Open B1935 0A: Left Seat Back Heater Circuit Rate of Change Below Threshold B1935 0B: Left Seat Back Heater Circuit Current Above Threshold B1935 0C: Left Seat Back Heater Circuit Current Below Threshold B1935 0D: Left Seat Back Heater Circuit Resistance Above Threshold B1935 0E: Left Seat Back Heater Circuit Resistance Below Threshold B1935 1F: Left Seat Back Heater Circuit Intermittent B2180 04: Right Seat Back Heater Circuit Open B2180 0A: Right Seat Back Heater Circuit Rate of Change Below Threshold B2180 0B: Right Seat Back Heater Circuit Current Above Threshold B2180 0C: Right Seat Back Heater Circuit Current Below Threshold B2180 0D: Right Seat Back Heater Circuit Resistance Above Threshold B2180 0E: Right Seat Back Heater Circuit Resistance Below Threshold B2180 1F: Right Seat Back Heater Circuit Intermittent |
| DTC B1935 or B2180 (Without Memory, With HP2) | B1935 04: Left Seat Back Heater Circuit Open B1935 0A: Left Seat Back Heater Circuit Rate of Change Below Threshold B1935 0B: Left Seat Back Heater Circuit Current Above Threshold B1935 0C: Left Seat Back Heater Circuit Current Below Threshold B1935 0D: Left Seat Back Heater Circuit Resistance Above Threshold B1935 0E: Left Seat Back Heater Circuit Resistance Below Threshold B1935 1F: Left Seat Back Heater Circuit Intermittent B2180 04: Right Seat Back Heater Circuit Open B2180 0A: Right Seat Back Heater Circuit Rate of Change Below Threshold B2180 0B: Right Seat Back Heater Circuit Current Above Threshold B2180 0C: Right Seat Back Heater Circuit Current Below Threshold B2180 0D: Right Seat Back Heater Circuit Resistance Above Threshold B2180 0E: Right Seat Back Heater Circuit Resistance Below Threshold B2180 1F: Right Seat Back Heater Circuit Intermittent |
| DTC B2345 (With Memory, Without HP2) | B2345 00: Seat Heater Disable Circuit B2345 13: Seat Heater Elements Temperature Above Threshold B2345 42: Seat Heater Elements Current Sensing Calibration Not Programmed B2345 4B: Seat Heater Elements Current Sensing Calibration Out of Range |
| DTC B2345 (Without Memory, With HP2) | B2345 00: Seat Heater Disable Circuit B2345 13: Seat Heater Elements Temperature Above Threshold B2345 42: Seat Heater Elements Current Sensing Calibration Not Programmed B2345 4B: Seat Heater Elements Current Sensing Calibration Out of Range |
| DTC B2345 (Rear Heated Seat Module) | B2345 00: Seat Heater Disable Circuit B2345 13: Seat Heater Disable Circuit Voltage Low / High Temperature B2345 42: Seat Heater Disable Circuit Calibration Data Set Not Programmed B2345 4B: Seat Heater Disable Circuit Calibration Not Learned |
| DTC B2425 or B2430 (With Memory, Without HP2) | B2425 04: Left Seat Heater Cushion Circuit Open B2425 0A: Left Seat Heater Cushion Circuit Rate of Change Below Threshold B2425 0B: Left Seat Heater Cushion Circuit Current Above Threshold B2425 0C: Left Seat Heater Cushion Circuit Current Below Threshold B2425 0D: Left Seat Heater Cushion Circuit Resistance Above Threshold B2425 0E: Left Seat Heater Cushion Circuit Resistance Below Threshold B2425 1F: Left Seat Heater Cushion Circuit Intermittent B2430 04: Right Seat Heater Cushion Circuit Open B2430 0A: Right Seat Heater Cushion Circuit Rate of Change Below Threshold B2430 0B: Right Seat Heater Cushion Circuit Current Above Threshold B2430 0C: Right Seat Heater Cushion Circuit Current Below Threshold B2430 0D: Right Seat Heater Cushion Circuit Resistance Above Threshold B2430 0E: Right Seat Heater Cushion Circuit Resistance Below Threshold B2430 1F: Right Seat Heater Cushion Circuit Intermittent |
| DTC B2425 or B2430 (Without Memory, With HP2) | B2425 04: Left Seat Heater Cushion Circuit Open B2425 0A: Left Seat Heater Cushion Circuit Rate of Change Below Threshold B2425 0B: Left Seat Heater Cushion Circuit Current Above Threshold B2425 0C: Left Seat Heater Cushion Circuit Current Below Threshold B2425 0D: Left Seat Heater Cushion Circuit Resistance Above Threshold B2425 0E: Left Seat Heater Cushion Circuit Resistance Below Threshold B2425 1F: Left Seat Heater Cushion Circuit Intermittent B2430 04: Right Seat Heater Cushion Circuit Open B2430 0A: Right Seat Heater Cushion Circuit Rate of Change Below Threshold B2430 0B: Right Seat Heater Cushion Circuit Current Above Threshold B2430 0C: Right Seat Heater Cushion Circuit Current Below Threshold B2430 0D: Right Seat Heater Cushion Circuit Resistance Above Threshold B2430 0E: Right Seat Heater Cushion Circuit Resistance Below Threshold B2430 1F: Right Seat Heater Cushion Circuit Intermittent |
| DTC B2425 or B2430 (Rear Heated Seat Module) | B2425 04: Left Seat Heater Cushion Circuit Open B2425 0A: Left Seat Heater Cushion Circuit Rate of Change Below Threshold B2425 0B: Left Seat Heater Cushion Circuit Current Above Threshold B2425 0C: Left Seat Heater Cushion Circuit Current Below Threshold B2425 0D: Left Seat Heater Cushion Circuit Resistance Above Threshold B2425 0E: Left Seat Heater Cushion Circuit Resistance Below Threshold B2425 1F: Left Seat Heater Cushion Circuit Intermittent B2430 04: Right Seat Heater Cushion Circuit Open B2430 0A: Right Seat Heater Cushion Circuit Rate of Change Below Threshold B2430 0B: Right Seat Heater Cushion Circuit Current Above Threshold B2430 0C: Right Seat Heater Cushion Circuit Current Below Threshold B2430 0D: Right Seat Heater Cushion Circuit Resistance Above Threshold B2430 0E: Right Seat Heater Cushion Circuit Resistance Below Threshold B2430 1F: Right Seat Heater Cushion Circuit Intermittent |
| DTC B2435 or B2440 (With Memory, Without HP2) | B2435 02: Left Seat Back Heater Sensor Circuit Short to Ground B2435 05: Left Seat Back Heater Sensor Circuit Short to Battery or Open B2440 02: Right Seat Back Heater Sensor Circuit Short to Ground B2440 05: Right Seat Back Heater Sensor Circuit Short to Battery or Open |
| DTC B2435 or B2440 (Without Memory, With HP2) | B2435 02: Left Seat Back Heater Sensor Circuit Short to Ground B2435 05: Left Seat Back Heater Sensor Circuit Short to Battery or Open B2440 02: Right Seat Back Heater Sensor Circuit Short to Ground B2440 05: Right Seat Back Heater Sensor Circuit Short to Battery or Open |
| DTC B2508 or B2509 (With Memory, Without HP2) | B2508 01: Seat Heater Relay Circuit Short to Battery B2508 02: Seat Heater Relay Circuit Short to Ground |
| DTC B2508 or B2509 (Without Memory, With HP2) | B2508 01: Seat Heater Relay Circuit Short to Battery B2508 02: Seat Heater Relay Circuit Short to Ground |
| DTC B2508 or B2509 (Rear Heated Seat Module) | B2508 01: Seat Heater Relay Circuit Short to Battery B2508 02: Seat Heater Relay Circuit Short to Ground |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.