Redneckmafia

My 08 HD F150 Screw has the factory installed powered sub under the seat. Well It ws just at the dealer for the climate control issue. And since I only get to drive the truck on the weekends "the wife drives it every day" I turned on the radio 5 days after she picked up the truck and I have no sound out of the sub.Now I do not know if it worked when she picked it up or not.She took it back yesterday thinking a 5 minute fix like leaving something unhooked but that was not found.She only had 2 hours to wait and they buttoned it back up so she could go.What could be the issue???I was hoping for a quick fix but does not seem to be the case.I am tired of dropping it off and going back to pick it up.If anyone has any ideas I would greatly appreciate it,and yes the fuse is good...

thump

I'd pull the radio and see if the sub connector is still connected/seated properly with no broken wires. They may have pulled the radio when working on the climate stuff and forgot to re-hook the sub harness. If it looks fine, then use a sharp probe and check for current on the sub wires. This will at least tell you if the problem is with the HU or the wiring/amp/sub.

Getting the radio out only involves popping off the trim piece and removing a couple screws.