GUEST wrote: > GM CHEV Uplander 3.5V6/2006, message "service theft system" come up > while driving, and the engine wouldn't start after stopped. > > > It seems that there are something need to be "Reset", please help (all > the dealers are shut on Sunday, so although still under warranty but > nobody can be reached until Monday). > > Any help and suggestion are highly appreciated.
Attempt to start car, leave key on 15 min or so until the security light goes of, turn key off, then back on, do not try to start just leave key in on position until security light goes off. Repeat 5x takes about an hour. Some older chevy you had to do this 2-3x, newer cars 5-6.
Good luck. This procedure should be in your manual.