Replace rear camera
Thread Starter
Burning Brakes
Joined: Oct 2000
Posts: 876
Likes: 23
From: Prescott Valley, AZ
Replace rear camera
i have a 2014 z51 and the rear vision system has become intermittent. it’s either the camera or the screen. thought i would replace the camera to see if that cleans things up. anyone have or has seen a how to video on how to replace the rear camera? or a step by step process on how to replace the camera? any info is appreciated.
Tech Contributor
Joined: Oct 1999
Posts: 40,999
Likes: 9,764
From: Charlotte, NC (formerly Endicott, NY)
Check to make sure your cable connections are in good shape. From what the dealership Corvette Tech tells me they have had a lot of problems with the camera cables in all of their cars. He had to replace the cable for my PDR and he says he has replaced rear view camera cables in Chevy's, Buick's, Caddies and GMC Trucks.
Bill
Bill
Thread Starter
Burning Brakes
Joined: Oct 2000
Posts: 876
Likes: 23
From: Prescott Valley, AZ
Check to make sure your cable connections are in good shape. From what the dealership Corvette Tech tells me they have had a lot of problems with the camera cables in all of their cars. He had to replace the cable for my PDR and he says he has replaced rear view camera cables in Chevy's, Buick's, Caddies and GMC Trucks.
Bill
Bill
Last edited by mmorse; Jun 20, 2018 at 12:23 AM.
Tech Contributor
Joined: Oct 1999
Posts: 40,999
Likes: 9,764
From: Charlotte, NC (formerly Endicott, NY)
I believe the cables will be covered. It is interesting the dealer mechanic didn't resolve the problem.
It took a while but I found the rear vision camera in volume 4 of the FSM. To replace the camera you have to remove the rear fascia. Once the fascia is removed you can press some snap clips and remove the camera from the fascia. There is a pluggable connector attached to the camera with a short harness.
When the transmission is placed in reverse the body control module supplies a voltage and ground to the camera and it sends back camera video + and - signals to the human-machine interface module.
The diagnostic code related to the rear vision system is B127B-2B. You would need a scanner that can read a lot more than OBD II codes to see if this code is set although when set it should cause the Service Rear Vision System message to be displayed. The ignition voltage is supplied at the BCM on connector X5 Pin 14 and the ground selection is supplied on BCM connector X7 Pin 8. The video signal differential signal lines go to the Human-Machine Interface Module K74 on Connector X2 Pins 5 and 6.
Bill
It took a while but I found the rear vision camera in volume 4 of the FSM. To replace the camera you have to remove the rear fascia. Once the fascia is removed you can press some snap clips and remove the camera from the fascia. There is a pluggable connector attached to the camera with a short harness.
When the transmission is placed in reverse the body control module supplies a voltage and ground to the camera and it sends back camera video + and - signals to the human-machine interface module.
The diagnostic code related to the rear vision system is B127B-2B. You would need a scanner that can read a lot more than OBD II codes to see if this code is set although when set it should cause the Service Rear Vision System message to be displayed. The ignition voltage is supplied at the BCM on connector X5 Pin 14 and the ground selection is supplied on BCM connector X7 Pin 8. The video signal differential signal lines go to the Human-Machine Interface Module K74 on Connector X2 Pins 5 and 6.
Bill
Last edited by Bill Dearborn; Jun 21, 2018 at 01:19 AM.
Thread Starter
Burning Brakes
Joined: Oct 2000
Posts: 876
Likes: 23
From: Prescott Valley, AZ
I believe the cables will be covered. It is interesting the dealer mechanic didn't resolve the problem.
It took a while but I found the rear vision camera in volume 4 of the FSM. To replace the camera you have to remove the rear fascia. Once the fascia is removed you can press some snap clips and remove the camera from the fascia. There is a pluggable connector attached to the camera with a short harness.
When the transmission is placed in reverse the body control module supplies a voltage and ground to the camera and it sends back camera video + and - signals to the human-machine interface module.
The diagnostic code related to the rear vision system is B127B-2B. You would need a scanner that can read a lot more than OBD II codes to see if this code is set although when set it should cause the Service Rear Vision System message to be displayed. The ignition voltage is supplied at the BCM on connector X5 Pin 14 and the ground selection is supplied on BCM connector X7 Pin 8. The video signal differential signal lines go to the Human-Machine Interface Module K74 on Connector X2 Pins 5 and 6.
Bill
It took a while but I found the rear vision camera in volume 4 of the FSM. To replace the camera you have to remove the rear fascia. Once the fascia is removed you can press some snap clips and remove the camera from the fascia. There is a pluggable connector attached to the camera with a short harness.
When the transmission is placed in reverse the body control module supplies a voltage and ground to the camera and it sends back camera video + and - signals to the human-machine interface module.
The diagnostic code related to the rear vision system is B127B-2B. You would need a scanner that can read a lot more than OBD II codes to see if this code is set although when set it should cause the Service Rear Vision System message to be displayed. The ignition voltage is supplied at the BCM on connector X5 Pin 14 and the ground selection is supplied on BCM connector X7 Pin 8. The video signal differential signal lines go to the Human-Machine Interface Module K74 on Connector X2 Pins 5 and 6.
Bill
Last edited by mmorse; Jun 21, 2018 at 01:54 PM.
Tech Contributor
Joined: Oct 1999
Posts: 40,999
Likes: 9,764
From: Charlotte, NC (formerly Endicott, NY)
If you are getting that Service Message then you are getting the diagnostic code that tells them whether a line is open or shorted. This should pop up when they are using their factory tools to scan the car. If you have a video that comes and goes it is highly likely the connector at the Human Machine Interface Module needs to be cleaned or the connector at the camera end needs to be cleaned. A worst case scenario is the cable is damaged. That is what happened when my PDR stopped working. The PDR camera cable lies under the passenger foot well and when somebody was in the car they tended to push a sharp edge into the cable which had been slightly out of position. That edge crushed the cable in that spot causing the wire inside to break. The big problem is to replace a cable GM only sources the harness so the parts cost can get high. My problem was covered by the warranty but the mechanic thought it would be better to remove the camera cable from the harness and tie it to the old harness Vs pulling the complete old harness out of the car.
Bill
Bill
Thread Starter
Burning Brakes
Joined: Oct 2000
Posts: 876
Likes: 23
From: Prescott Valley, AZ
If you are getting that Service Message then you are getting the diagnostic code that tells them whether a line is open or shorted. This should pop up when they are using their factory tools to scan the car. If you have a video that comes and goes it is highly likely the connector at the Human Machine Interface Module needs to be cleaned or the connector at the camera end needs to be cleaned. A worst case scenario is the cable is damaged. That is what happened when my PDR stopped working. The PDR camera cable lies under the passenger foot well and when somebody was in the car they tended to push a sharp edge into the cable which had been slightly out of position. That edge crushed the cable in that spot causing the wire inside to break. The big problem is to replace a cable GM only sources the harness so the parts cost can get high. My problem was covered by the warranty but the mechanic thought it would be better to remove the camera cable from the harness and tie it to the old harness Vs pulling the complete old harness out of the car.
Bill
Bill
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If and when this would happen to my '14, I'll replace the OEM camera and hook the new aftermarket camera into my Navtool. The Navtool has the ability to run a rear facing camera but still allows me to use the OEM camera. Taking the rear facia off to do a rear camera repair is not on my list of fun **** to do!
Elmer
Elmer