Mechanics

ELECTRICAL PROBLEMS, DOOR LOCKS WORK ON THERE OWN, ALARM SOUNDS ON OWN, SPEEDO SOMETIMES READS 120 MPH, WHEN GOING 60

2002 Pontiac Bonneville • 14,000 miles

Door locks on own, alarm goes off on its wn
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.d1801
December 7, 2011.



You may have a ground problem. I am giving you the 2 ground diagrams that have the grounds you should check. Look for corrosion and a good tight contact to bare metal.