Engine-Codes - Gmc - B3930 GMC

B3930 GMC Code - Child Security Lock Motors Circuit

- Code Popularity: 319 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B3930 GMC?

  • 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 to Fix the B3930 GMC Code?

Start by checking 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.

|What is the Cost to Diagnose the Code B3930 GMC?

Labor: 1.0

The cost to diagnose the B3930 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B3930 GMC Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the B3930 GMC Code Mean?

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.

Child Security Lock Motors Circuit

|Need more Information on the B3930 GMC Code?

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|Need Help with the B3930 GMC Code?

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