Other symptoms: No fuel pump, no starter activation, no trouble codes. no click no nothing.. when you turn the key. then take the key out and put it back in and everything work fine runs fine can go a day or two then does it again. it has been doing this for a while. have changed starter,solenoid,battery,Key, voltage regulator. out of money....
You changed the ignition switch?
Switch the fuel pump relay, with a similar one,
as well as the starter relay,one at a time
Check for corroded fusible links
Neutral Safety Switch-- been checked?
In the beginning-- you should have done testing-- working off
a wiring diagram & not changed any parts-- unless they were
tested & failed a test.
You remove & replace the key & your okey-- for a day or more
Does that not point you somewhere !
(get the diagrams & study them)
Ck neutral safety switch
SOURCE: How can I bypass a anti auto theft system on my 1990 cadillac seville?
I Have A Seville 1990, When That Happen To Me I Got The Inginion
Replaced Problem Solved. What Is Happening Is Your Key Has A Chip And That Chip Is A Resister And When The Valve Is Not Sented To The Computer It Disengages the Fuel Pump And Than Tells You To Wait. Soon All That Will Happen Is You Will Get The Wait 3 Mins And It Will Never Start, A Good Locksmith Can Take Care Of This For You And That Will Save You Some Money. Cause If You Go To The Dealer Ouch They Will Hit You Up. But I Asure This Is How It Will Happen Cause It Is How It Happen To Me
And Sorry There Is No By Passing The Computer
SOURCE: car wont start when i turn the key
The first thing you need to check is whether the key has a pellet in it or "chip". If it does...the problem is most likely your key lock cylinder. Go buy a new key lock cylinder....KEEP YOUR OLD KEY. Take your new lock cylinder down to any Chevrolet dealer to find out what the VATS number is for your key....then have the dealer cut you a new key with that same VATS number...then go to your vehicle and remove the negative battery cable...this does two things...1. It resets the computer after a five minute period of no power...2.. allows you to work on the steering column without power on it.
Remove the steering wheel with the aid of repair manual.
Put the new key lock cylinder with the wire running down the steering column. Then put the steering column back together....Hook up the negative battery cable, then use your new key that was CUT and your car should start
SOURCE: Anti-theft has engaged
sounds like the transmitter in the key head is defective or it lost programming, try these programing steps, if that doesn't do it u need another key made.
Turn ignition from OFF to RUN 8 times within 10 seconds, with the 8th time ending in RUN. Door
locks will cycle to confirm programming mode.
2. Within 20 seconds press any button on first keyless remote. Door locks will cycle to confirm
programming.
3. Within 20 seconds, press any button on second keyless remote. Door locks will cycle again to
confirm programming.
4. Turn ignition to OFF. Locks will again cycle to indicate end of programming mode.
SOURCE: anti-theft system
Read your manual or take it to the dealer. It sounds like it needs reset.....if this is a factory anti theft system, only the installer may be able to help you.
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