We just got a 1998 Chevy Suburban with a 350 in it. It needed a little tweaking so we did it ourselves including changing the oil. I know when a Lube Place does that, they are able to hit the switch. Isn't there a trick to getting it to go off? All systems are sound, everything else is great. I seem to remember something like turning the key on without cranking the motor, put it in a gear, and hold down a button... does anyone know how to do it without having to unhook the battery? Thanks!