Seat Motors Over Current
Table of contents
B3962 GMC Possible Causes
- Faulty Adjuster Motor Assembly
- Adjuster Motor Assembly harness is open or shorted
- Adjuster Motor Assembly circuit poor electrical connection
- Faulty Driver Seat Module (DSM)
How do I fix code B3962 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B3962 GMC code
The cost of diagnosing the B3962 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B3962 GMC Description
The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. In an inactive state both of the motor control circuits are grounded within the DSM. In an active state the DSM switches the appropriate motor control circuit to battery positive voltage. The direction of the adjuster motor rotation is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. During adjuster motor operation the DSM also monitors the current flow through the motor control circuits. The Diagnostic Trouble Code (DTC) sets when a motor control circuit current monitored by the DSM is determined to be shorted to ground.