2004 GMC Sierra "start check theft" Questions

...start rite up whats my problem? Are the injectors firing (pulsing)? This can be checked with a test light. YOUR TRUCK MAY HAVE GONE INTO ANTI-THEFT MODE. THIS IS A SYSTEM FROM G.M. THE EASIEST TO ...

theft system problem if your car will not start. then try trun the key on do not try and start it just trun it on let it set for about 10 to 20 min.s then trun it off and try to start it. should reset

hi i have 12/01 Gmc sierra security light is on and truck will not start It sounds like a theft deterrent circuit has been activated.. Check your security device handbook on how to reset it.

check engine light is on. Truck will crank but will not start Are there any lights lit on your dash??? It could possibly be the theft system.. I had it happen to me in my buick.. I found a site and it

start, but it won't cause the engine to stall.You might want to have someone check the fuel pressure and spark at the plugs if you don't see the security light on the cluster.Could be the fuel

...start and when this happens the heater/ac fan will not work and also the horn.you turn the key and all the lights come on but will not turn the starter over.i have tried replacing the modual on the ...

...start. No codes, good fuel pressure and spark I assume it is cranking. So if you have gas and fire, we're down to timing, right? Or do you have security light on? Not sure what anti-theft system you ...

start as usual. If it was operated improperly the Powertrain Control Module will be directed to disable fuel injector operation, prevent engine startup, and there will be a diagnostic trouble code set

CHeck it. mY 02 EXPEDITION WONT START, IT TURNS OVER . I DON'T HEAR THE FUEL PUMP CHARGING THE FUEL LINES. COULD THIS BE THE ANTI-THEFT SYSTEM? , oR SHOULD I CONCENTRATE ON THE FUEL PUMP INSTEAD THANX

start ? Did you check the park neutral switch ? Is there a theft light lit ? Theft deterrent relay ? You have to know how it works if you want to fix the problem . When you turn the key to start , the