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.
2003 Hummer H2FACTORY OEM SERVICE PROCEDURE
Power Seat DTCS
SEAT AIR BAG DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, B1820, B1830, B1835, B1840, B1845, B1940, OR B1945 | Switch Input To Driver Seat Module Is Active Too Long |
| DTC B1770, B1775, B1780, B1785, B1790, B1805, OR B2415 | Motor Control Circuit Shorted To Ground, Battery Positive Voltage, Or Open |
| DTC B1825 | Recline Motor Position Sensor Signal Circuit Voltage |
| DTC B1850, B1860, B1960, B2355, B2365, OR B2375 | Position Sensor Movement Not Detected During Adjuster Motor Operation |
| DTC B2425 OR B2430 | Heater Element Control Circuit Short To Voltage, Short To Ground, Or Open |
| DTC B2435 OR B2440 | Heated Seat Sensor Signal Circuit Voltage, Or Cannot Reach Seat Temperature |
| DTC B3941 | Seat Heater Element Voltage Supply Circuit Shorted To Ground |
| DTC B3962 | Motor Control Circuit Shorted To Ground |
Factory Service Tools
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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.
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