Just a thought.. and those that need to consider the source feel free to correct me.. But I have yet to see a Skreem module play games. They go out and your dead in the water. Your horn-alarm issue is most likely a totally different issue.. as in dead alarm backup battery.

I do believe EVERY case of bad Skreem takes you to 2 cranks and pull battery cable.

But hey it's your diagnostic and tow fee..