According to the TSB, some owners of affected trucks “may comment on narrow guidelines and a zoomed out/fisheye appearance from the rearview camera.” The cause of this problem “may be an issue with the Video Processing Control Module (VPCM) calibration distorting the view from the rearview camera and decreasing the width of the guidelines,” the TSB also says.
To correct this problem, GM instructs dealers to reprogram the VPCM with a more up-to-date software version. Only trucks equipped with the Surround Vision – Trailer Vision camera system (RPO UVI) will be affected by this problem, as the software issue is for the optional trailer camera and not the regular backup camera in the truck. This problem can also extend to 2020 Chevy Silverado HD and GMC Sierra HD trucks sold in any market including the United States, Canada, Mexico, Israel and Thailand (ASEAN).
This TSB was initially released on August 24th, 2020, but GM later released an updated version on October 29th, 2020 providing dealerships with part numbers for repairs and other parts-related information. Owners of GM full-size heavy-duty pickup trucks who may be affected by this problem can speak to their dealership to have the problem addressed. The TSB did not indicate how long these repairs may take.
Certain light-duty Chevy Silverado 1500 and GMC Sierra 1500 trucks were recalled earlier this week due to a problem with the driveshaft welds. Only a small number of trucks were affected by that recall, although it included vehicles from both the 2019 and 2020 model year.