Get a reading saying battery not charging and also service drive control. Left key in truck while in church came out husband put his key in to open door alarm went off cut alarm off drove to friend house got ready to leave wouldn't't crank. Starts up like it is going to crank but won't.
When cranking sounds as if alarm system not letting it crank. Tried resetting. on 2003 GMC Yukon Denali
by stoneka19 in Riverdale, GA on September 09, 2013
ANSWER by goodguy on September 09, 2013
could be your alternator try boosting the vehicle to see if it will start