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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1842 (DTC INDEX)POWER SEAT DTCS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Power Seat DTCS
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Power Seat DTCS
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
SEAT DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, B1820, B1830, B1835, B1840, B1845, B1940 Or B1945 | Seat Adjuster Switch Input Active For More Than 60 Seconds |
| 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 Signal |
| 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 |
| DTC B3941 | Seat Heater Element Voltage Supply Circuits Shorted To Ground |
| DTC B3962 | Motor Control Circuit Shorted 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.