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I'm currently having the same issue. Battery went dead after being off for about 3 hours for no reason. After the Jumpstart I lost my backup camera and my climate controls won't work. Voltage while driving drops to 12.7, but when I brake goes to 14.5ish. Battery tested fine.
Update. I jump started the truck and it started now. Radio is still locked out and I have a service stability system and air suspension. No clue what happend to the battery.
I have a 2020 1500 with the hk system. Decided to add an aftermarket amp and subs. I went with the Pac AP4-CH4 to add everything with it. Plugged it in but when I went to start my truck it made a pop through the speakers and everything went black. Truck won't start now and the radio is locked...
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