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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 683 (SEAT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Diagnostic Code Index

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Diagnostic Code Index

WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC CODE INDEX

DTC	Description
DTC B1770, B1775, B1780, B1785, B1790, B1805, or B2415	DTC B1770 Driver Seat Motor Horizontal Circuit DTC B1775 Driver Seat Motor Front Vertical Circuit DTC B1780 Driver Seat Motor Rear Vertical Circuit DTC B1785 Driver Seat Motor Recline Circuit DTC B1790 Driver Seat Motor Lumbar Circuit DTC B1805 Driver Seat Motor Side Bolster Circuit
DTC B1825	Driver Seat Recline Position Sensor Circuit
DTC B1850, B1860, B1960, B2355, B2365, or B2375	DTC B1850 Driver Seat Lumbar Position Sensor Circuit DTC B1960 Driver Seat Side Bolster Position Sensor Circuit DTC B2355 Driver Seat Front Vertical Position Sensor Circuit DTC B2365 Driver Seat Rear Vertical Position Sensor Circuit DTC B2375 Driver Seat Horizontal Position Sensor Circuit
DTC B2425 or B2430	DTC B2425 Driver Seat Heater Circuit DTC B2430 Passenger Seat Heater Circuit
DTC B2435 or B2440	DTC B2435 Driver Seat Back Heater Sensor Circuit DTC B2440 Passenger Seat Back Heater Sensor Circuit
DTC B3941	Front Seat Heaters Circuit
DTC B3962	Seat Motors Over Current

RENDER: 1.0x

NO RELATED

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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.