Problem with GM MTX subs

[tcarro2001]

I have the GM MTX subs mounted in the trunk. They were installed by the dealer. Well everything was fine for about 2 weeks (warm everyday) now I am having an issue. In the morning when it is below 45 degrees outside the subs do not work. After work when the temp is well above 60 degrees the subs work perfectly.

The cold weather is the only thing that I can think of that is a possible variable.

One evening I turned the car to on where it is parked at night and it worked great, the next morning (cold outside) it turned the car on, without cranking it both times and the subs did not work.

Any suggestions. According to the installation instructions there is no soldering or anything involved only plugging connections, so I am stumped.

PLEASE HELP

[Hicompression]

Sounds like the wiring at one of the circuits/connections is contracting as the weather cools overnight leading to an "open" circuit. When the weather warms throughout the day, the metal at the open circuit expands and closes the circuit and power flows once again to the subs. You're going to have to check for continuity and find where the circuit is "open" when the subs aren't working.