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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LS >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Image Display Camera System >> Diagnostic Information And Procedures >> DTC B127B: Rearview Camera Input Signal Circuit Missing Reference >> Circuit/System Verification

Circuit/System Verification

  1. Engine running, transmission in R.
    2. NOTE:

    A clear rear vision image is an image that is free of flickering, blinking, excessive blue/yellow hue, and/or blurriness/pixilation such that it obstructs the drivers view out the rear of the vehicle.

  2. Verify a clear rear vision image is displayed on the P17 Info Display Module.
    • If a clear image is not displayed 

      Refer to Circuit/System Testing.

    • Go to next step: If a clear image is displayed 
  3. All OK.
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