Needing Urgent Help

[Sonnie]

Hoping someone somewhere can help me out here. I agreed to trade my 2019 2WD Laramie today for a 2020 4WD Laramie... but I have to take the aftermarket amps out and put it back factory. So I started on it tonight.

I had an PAC AmpPRO 4 (AP4-CH41) installed, which plugs in between factory harness and the amp module in the dash. It's one large plug... very simple to unplug and plug back up. So I removed the PAC unit, plugged the factory harness back into the amp module, then plugged all the dash plugs back in... now something has gone haywire. The wipers will not stop running on low... wiper control won't work... none of my climate controls work, radio won't work... Sirius is not there, although the display does turn on, but none of the knobs or buttons work anything.

I've tried unplugging the ground from the battery for a few minutes to hopefully reset things. I've taken everything back out, double checked the connections, but the same bizarre things are happening.


Any ideas?

 

[killerbee]

Try unplugging negative post for 30 mins and do a few mile drive.


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[tron67j]

Your system has to relearn everything. My understanding is that you need to run your truck for a period of time, maybe even starting and stopping engine a few times to have everything return. Read quite a bit about battery replacement and how this stuff happens, assuming the same thing is going on for you.

 

[Sonnie]

It ended up being nothing to do with the PAC. Somehow a ground got shorted and kept blowing the controls fuse. Dealer found it and fixed it for me, no real big deal for them... thankfully.