Dustin10

When they reset the radio module the front sensors started working again.. my friend works for the dealer and with their discount the radio is still $500+ without labor. I’d hate to pay for that then find out it is the HMI or something else. To me it just doesn’t seem like it’s a radio unit alone causing this.

I have a 2018 GMC Sierra. My radio would not work when the temperature was really cold (negative temperatures) but as the truck would warm up the radio would start working again. As time went on warmer temperatures like 10, 15 and even 30 degrees would start to impact the radio. Same issue it wouldn’t work for 10-20 minutes until the truck was warmed up. Eventually the radio stopped working all together. When it quit working all together my front bumper sensors stopped working and so did the speed limit display in my dash. The back up camera worked and displayed on the screen the whole time. I brought it to the dealership today and they reset the radio with their computer but said I will eventually need a new radio. If it’s just the radio why would it impact the front bumper sensors and the speed limit display? They said one system going down can cause others to go down too. Anything else it could be and could the dealership be wrong thinking it’s just the radio? When I research online I’m seeing the HMI could be a more likely culprit. Both are expensive so I’d rather have more information before buying parts. new battery, replaced the main ground from the battery and to the frame.