The infotainment screen on some 2020-2021 XT5, XT6 and Acadia models may intermittently show a black screen with red triangle and red camera icons when the vehicle is in Reverse. (Fig. 15) The black screen may be the result of the crimping of the coaxial cable connectors to the cable, which causes an excessive resistance that interrupts the video signal.
Fig. 15
Once the condition is verified, there are several different repair procedures depending on the vehicle and model year. For complete repair information, refer to Bulletin #21-NA-048.
On 2020 models only, before making any repairs, check that the A11 Radio header is not loose. With the vehicle in Reverse, move the instrument panel coaxial cable, located behind the right kick panel, back and forth below the connection to the A11 Radio while watching the screen. This condition may be found on a small percentage of vehicles.
Coaxial Cable Replacement
For vehicles that show there is excessive resistance in the coaxial cable, the coaxial cable must be replaced.
XT6 models – Replace only the short instrument panel coaxial cable from the in-line connector to the A11 Radio, located behind the right kick panel.
XT5 models – Replace the long body coaxial cable from the Video Processing Module (VPM) to the in-line connector as well as the short instrument panel coaxial cable from the in-line connector to the A11 Radio, located behind the right kick panel. The body cable runs from the VPM to the in-line connection to the instrument panel short cable behind the right kick panel, to the liftgate connector, and to the connector to the cable to the rearview mirror in the top-left D-pillar headliner area.
Acadia models – Replace the long body coaxial cable from the Video Processing Module (VPM) to the in-line connector as well as the short instrument panel coaxial cable from the in-line connector to the A11 Radio, located behind the right kick panel. The body cable runs from the VPM to the in-line connector to the instrument panel short cable behind the right kick panel and to the liftable connector.
On XT5 and Acadia models, the long cable should be routed and affixed to the body wiring harness. The original body coaxial cable should have the ends removed and can be abandoned in the main body wiring harness.
Refer to Bulletin #21-NA-048 for additional details and parts information.
– Thanks to Tom Burlingam
