Car making me hate sensors. Latest is the theft light stays on when car is started. Car will stay on a few minutes then die out. Turning key does nothing. After few minutes it starts right up then stalls again. Has happened many times while driving. Hot weather makes it worse. A few feet then stalls. Ha e checked and tried to reset alarm system. Nothing has worked. Disconnected battery but it didn't reset anything. Have manually unlocked n locked the door but the theft light keeps blinking like not recognizing the key. Driving me crazy. Ready to junk it n fix up my 89 suburban. Any suggestions? Have tried resetting alarm system nothings working.