Engine-Codes - Gmc - B127B GMC

B127B GMC Code - Rearview Camera Input Signal

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B127B GMC code possible causes

  • Faulty Rearview Camera
  • Rearview Camera harness is open or shorted
  • Rearview Camera circuit poor electrical connection
  • Faulty Human Machine Interface Control Module

|How is the B127B GMC code repair?

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 B127B GMC code

Labor: 1.0

The cost to diagnose the B127B 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.

|What are B127B GMC code possible symptoms?

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

|What is B127B GMC code meaning?

When the vehicle is placed in reverse with the engine running, a voltage signal is sent to the rearview camera to turn on and send a video signal to the Human Machine Interface Control Module. If the Human Machine Interface Control Module does not see a signal from the camera it will set B127B 2B and display Service Rear Vision System.

|Need more information with the B127B GMC code?

Need more information on how to fix the B127B GMC code?
Get Access to Factory Service Manuals

|Need help with a B127B GMC code?

Get the B127b Gmc code diagnosed by a professional: Find a repair shop in your area