Last year while in Canada we had a rain storm come through and I lost my GPS signal. same old message "gps module not responding". In my Lund I have a complete NMEA 2000 system. I run an LCX26HD in the back and an LCX20c in the front. Several times though out the week it would kick in and out for no reason. I assumed it got wet. This year I took all of the connections apart, cleaned them with an electronic cleaner and I applied a small amount of Di-electric grease to the pins on every connection. Last week we were in Canada and again had an overnight heavy rain storm and in the morning I had zero problems. As a matter of fact, I never lost my GPS signal all week. I don't know if you all already do that but I believe it help me. Just something to think about before you go and buy a new puck. Greg.