Security indicater flashing chevy cheyene

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rusty
Posts: 2
Joined: Mon Dec 09, 2013 8:29 pm

Security indicater flashing chevy cheyene

Unread post by rusty » Mon Dec 09, 2013 8:40 pm

Hi
I got chevy cheyene 4x4. some years ago replaced key n tumbler. Then bout a year ago the security light would start flashing and the truck would start,only to shut off right a way. I learned to turn key on and leave for 10 min or so then turn off, pull key, then start. if light was still flashing i wud have to start the process over. Bout 2 monthes ago had key n tumbler swaped out of wrecked truck into mine. This helped for a while but now it is a problem again. How can I kick this problem???????????
Thanks, Rusty

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TerryAuto
Posts: 313
Joined: Fri Dec 11, 2009 8:48 pm

Re: Security indicater flashing chevy cheyene

Unread post by TerryAuto » Tue Dec 10, 2013 12:06 am

Your truck does not have a problem in the ignition key cylinder (tumbler), it is a problem in the passlock sensor. This is the aluminum housing that the ignition cylinder sits in. The sensor reads the key and controls the theft system. Either that, or a bad connection on the wiring harness from the ignition that goes down the steering column and connects to the dash harness. Could be a loose connection in that connector, or a wire rubbing on the column. Tilt the wheel up and down while cranking to move the wiring around to see if that causes or fixes the problem.

rusty
Posts: 2
Joined: Mon Dec 09, 2013 8:29 pm

Re: Security indicater flashing chevy cheyene

Unread post by rusty » Tue Dec 10, 2013 10:12 pm

Thanks for the suggestions. Will check that out.

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