I have a 2008 Tahoe and recently I have be having some pretty crazy things happen to it while driving down the road. whenever there is a shift in power ( going up a hill or turning on blinker or bright lights) the Tahoe will begin to loose power, door locks begin to lock/unlock repeatedly dash lights begin to flicker and its as if the battery has been disconnected while driving. THe clock resets, and the outside temp gage on the rearview mirror resets. THe battery has been recently replaced, all four doorlock assentuators ( spelling) have been replaced as well. Please help!! of course the dealership can't find anything worng with in in the 2 days they kept it.