Child Security Lock Motors Circuit
Table of contents
B3930 GMC Possible Causes
- Faulty Child Security Lock Relay
- Child Security Lock Relay harness is open or shorted
- Child Security Lock Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B3930 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 B3930 GMC code
The cost of diagnosing the B3930 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)
B3930 GMC Description
The Body Control Module (BCM) controls the Child Security Lock Relay when it receives a command to lockout the rear doors. The relay will apply voltage to both child security circuits at the rear door latches to disable the interior door handles. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to voltage, short to ground or an open/high resistance on the child security lock disable relay control circuit.