Engine-Codes - Gmc - B1420 GMC

B1420 GMC Code - Device Voltage Circuit

- Code Popularity: 1,626 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1420 GMC?

  • Faulty Body Control Module (BCM)
  • Body Control Module harness is open or shorted
  • Body Control Module circuit poor electrical connection

|How to Fix the B1420 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 B1420 GMC?

Labor: 1.0

The cost to diagnose the B1420 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.

Does your car have Safety Recalls? → Check here

|What are Code B1420 GMC Possible Symptoms?

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

|What Does the B1420 GMC Code Mean?

The Body Control Module (BCM) monitors the battery voltage on the battery voltage signal circuit. Damage to components and incorrect data may occur when the voltage is out of range.

Device Voltage Circuit

|Need more Information on the B1420 GMC Code?

Need more information on how to fix the B1420 GMC code? Get Access to Factory Service Manuals

|Need Help with the B1420 GMC Code?

Get the B1420 GMC code diagnosed by a professional: Find a repair shop in your area