i have a 2005 equinox and it wont start. It acts like it want to turn over but doesn't. we just put a new tranny in it, brakes, wheelbarings, and driveshaft. It had a antifreeze leak, fixed that. pulled into the driveway fine and then all of a sudden everything died. and now it acts like it want to start but wont turn over. the TC light is on like it was before we put the new tranny in.
Try the crank shaft or cam shaft sensor