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Re: Mycar wont start ichanged the fuelpump fuse and it...
REMOVE FUEL PUMP RELAY.REPLACE FUSE IF STILL BLOWS SHORT IN PCM TO IGNITION CIRCUIT.IF FUSE DONT BLOW I AM LOOKING AT A BAD FUEL PUMP RELAY OR FAULTY FUEL PUMP.
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More than likely a fuse, rare that all lights would go out at once, so check fuses first and foremost. Also, check your dimmer switch which some how may have been moved to off, this happens more often than fuse blowing.
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The security system is called Passlock. And yes it will turn off the fuel injectors when it starts to fail. Go check out this link, should help inform you about how the system works along with some ways to get around it.
bad fuelpump, good luck . just make sure you have spark if so ,then il bet fuelpump is bad, just replace it. it is located inside fuel tank.hope this helps.
if you are not hearing the pump turn on there's a good chance that its the fuel pump most gm's have a faulty wiring on the fuel pump harness id check the relay and wiring if theirs power to the pump but not crank that would be it id get a gm pump not a carter better to use oem
yor fuel pump is more likely to be defective and this can checked by connecting a mulitimeter and checking the current draw on operation should not exceed 3 amps
slide a stick or twig up underneath the steering column which will hold a specialized switch in place. Try the ignition. Should it start, the actual problem in the transmission interlock switch for the transmission [located in the center console] which also protects the ignition from turning on [secondary switch prior to the ignition switch]. What a ***** to have found... took me 8 hours but GM wanted 800$ for the fix.
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