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


Asked by 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


It may be the famous GM passlock security that is not allowing it to stay running:

2 of 2 people found this helpful.

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.

5 of 5 people found this helpful.

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