My 1998 gmc sierra will turn over but won't stay running.
35

Asked by willjoe99 Nov 01, 2014 at 09:51 PM about the 1998 GMC Sierra C/K 1500

Question type: Maintenance & Repair

It has a new starter, fuel pump, battery, and has good fuel pressure. Nothing came up on
the code scanner when plugged in either.

2 Answers
25,265

Mark answered 10 years ago

It may be the famous GM passlock security that is not allowing it to stay running: https://www.youtube.com/watch?v=yDRwkEFLq-U

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25,265

Mark answered 10 years ago

If you find that this is your issue, refer to the following PDF and try the re-learning procedure. Your vehicle should have the Passlock (coded cylinder) type security. http://my.cardone.com/techdocs/pt%2077-0011.pdf

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