Hi
I have a 2002 lesabre... While on driving at night and I tap my brake to shut off my cruise and coast, a second later my lights flicker, just like flipping a switch off and back on within a second. my voltgauge does go down but it happens so fast it hard to see. will do other at other times but only when coasting?? Any ideas what it could be??

Thanks
Brad

loose battery connection or ground

Do some checks to see if you notice this at times when tapping the brakes, stopping, etc without the cruise on. It does sound like it make me a lose connection but if it only does it when you have the cruise applied, then there has to be some relationship between the cruise being applied and taping the brakes to release the cruise. Try just turning the cruise off instead of taping the brakes to see if you notice this flickering.

I dont have to have the cruise on. If I'm driving along and let off the gas it will do it. Cables are good.

Also check all the ground connections on the engine.