Aftermarket would be a last resort, believe me, I know these trucks are sensitive. I wouldn't consider a remote start. But the dealership wants $140 just to check the system to see if it works, if there were a way to test it without that cost it would be great! I bought mine 6 months ago and have already put $4,000 into gaskets, brakes, shocks, heater core etc. Any other truck I would have cut my losses a while ago.