Question about 1999 GMC Jimmy

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When I first start the Jimmy it fires right up. When I drive it for more than 20 min. While driving the engine runs great,and even better now with all the new parts. I park it then try to re-start it. It only cranks and does not fire back up. I could drive it for hours,but when I stop and shut it off. It will not start back up. It will start again if I wait for 20 or 30 min. I have so far replaced,the fuel pump,fuel filter,the map censor,the crank censor,EGR valve,air filter,all plugs,all wires,the whole distributor assembly,the oxygen censor,and the oil. I took off the coil,and the ingintion module. I brought them to autozone and had them run a test on them. All checked out fine. Im at the point of WTF? Can't figure this one out. Anyone on here had this same problem? The check engine light never has turned on.

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  • hi_jax231 Jun 26, 2009

    During the non-restart problem. I do have spark. If I do have spark could it still be the ignition module?

  • hi_jax231 Jun 26, 2009

    Does anyone have an idea on what is causing this?

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  • 36 Answers

It may be a bad ignition mod,, Autozone test
are OK for batteries and Alternators but not
modules because it's not a real test, mostly
continuity test, not component heat test...
Get a new module and try it...

Posted on Jun 26, 2009

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Posted on Jan 02, 2017

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