Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
sorry for the delay.............Greetings...... “Hi, I’m Don (aka MOLurch) and I look forward to helping you!”.
You did not mention if this is Factory Back Up Camera & Monitor, Dealer Installed or AftermarketI assume it is Aftermarket, & if you are connected to the DARK BLUE wire located in PIN 22 WHITE PLUG of the BCM, I would start Voltage test there, as the DARK BLUE wire should be Voltage + in Reverse with Key ON.Not knowing how your Camera & Mirror are connected, but ONLY the Camera should be connected to the DARK BLUE wire without the use of a SPDT Relay to turn On Monitor in Mirror.IF to much draw is on the DARK BLUE wire, then this can affect the BCM & cause damage to the circuit
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This has worked fine for last 2 years and just started to act up recently.
I understand, but many things can cause a difference in AMP draw over time
You posted the DARK BLUE wire is the "trigger for display".......?I assume the Camera Voltage is thru the Back Up Lights?............or can you turn the Camera on anytime?
I would check the harness at the Tail Gate, under the truck also connections to the Back Up Lights (if used)