Question about 1996 GMC Jimmy

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My 2000 jimmy wont turn over and the fuel pump is good

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  • jhammock Aug 04, 2008

    it wont do anything when you turn the key to on..starter has been changed,battery is good,fuses have been checked..this problem started all of a sudden

  • Anonymous Aug 19, 2008

    Truck won't start...won't even try to turn over. Just happened all of a sudden. A red light is blinking all the time. Starter has been changed and battery is good.

    Help?


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The cam position sensor being loose or disconnected could cause this it is a small plug on the lower frount of the flywheel

Posted on Aug 28, 2008

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1 Answer

2000 GMC JIMMY What controls turning on fuel pump


The pump is powered by the relay. The relay is grounded by the computer. It gets a ground signal for the first 3 seconds, then only if the computer sees oil pressure or RPM to know the engine is running.
You should be able to ground the relay and run the pump for several minutes. After 30 seconds you should be at max pressure.
Normal pressure is 15psi for a truck that has throttle body injectors such as a mid 80s model, and 65psi for trucks that have port fuel injection like yours.
You may have the wrong pump.

Sep 05, 2012 | 2000 GMC Jimmy

1 Answer

2000 GMC Jimmy, starts up every time, but only runs for 10 seconds then dies. Restarts every time but will not stay running. Replaced fuel pump, fuel filter, CAM position sensor, crank position sensor,...


you say fuel pressure is good, but what is it? what is the fuel pressure when it stalls out? Spec is 60-66 psi and it wont run if its 55 psi. the fuel pump relay should be good if the pump runs. Make sure the ground for the pump is good , G402 should be on left frame rail. you may have had it off to replace the pump? maybe? it may be time to stop guessing and have a repair shop diagnose it for you. You sure have replaced a lot of good parts.

Sep 07, 2011 | 2000 GMC Jimmy

1 Answer

My name is matt and i have a 2000 gmc jimmy and it takes about 3 KEY TURNS TO START! once its started it runs! but if i cut it off ad then try to restart it it wont start till i pour fuel in my engine...


sounds like either you have a fuel pump going out or you have a fuel line that is leaking and causing air to get in the line causing the fuel system to lose it's prime.

Jan 08, 2011 | 2000 GMC Jimmy

1 Answer

My 2000 GMC Jimmy cranks but wont start unless i try repeatedly or pour fuel into the intake , then it runs fine until i let it sit for hours and then the sameproblem occurs... any ideas info. or know how...


Hi, had same problem with my truck. you need to replace your fuel pump because it no longer holds the pressure in your fuel rail. If you cycle your ignition on and off multiple times(this will cycle the fuel pump relay) with out turning over the engine then start it normally, that is the problem.

Aug 22, 2010 | 2000 GMC Jimmy

1 Answer

2000 Jimmy- fuel pump on, cranks good, starts intermittently- sometimes wont start- Ideas??


anti theft engaged, or weak fuel pump. Check fuel pressure, Just becaus it runs, Doesnt mean its not bad, 45 psi minimum to run

Jun 14, 2010 | 2000 GMC Jimmy

1 Answer

2000 jimmy intermitant problem


next time it dies check for spark, they have bad contorl modules, when they get hot they die,i would start there,also when you replaced the fuel pump did you replace the wire harness plug to pump? the was another problem was the connector melting and looses contact, hope this helps.

Dec 26, 2009 | 2000 GMC Jimmy

1 Answer

2000 jimmy will crank but wont start, fuel put is


Then it is the fuel pump. Can you hear the fuel pump come on if not that is what it is. That is why when you put fuel in the intake it started. Good Luck.

Nov 10, 2009 | 2000 GMC Jimmy

1 Answer

2000 gmc jimmy wont start fuel pump comes on and cuts off but will not start.I have changed the fuel filter and that did not work. Is the pump not building the pressure it needs to start or would my...


the fuel pressure if leaking could cause this the regulator is located under the intake plenum but you should smell gas .if you dont then most likely the pump is bad ,the pump will come on for 2 seconds when the key is on then go off it will not stay on with just the key on only when you crank it will it .so have your fuel pressure checked with a gauge.

Mar 22, 2009 | 2000 GMC Jimmy

1 Answer

2000 jimmy will not start


bad battery conection or fuesable link

Feb 26, 2009 | 2000 GMC Jimmy

1 Answer

2000 gmc jimmy wont start fuel pump comes on and cuts off but will not start.I have changed the fuel filter and that did not work. Is the pump not building the pressure it needs to start or would my...


When you hook the pressure test guage to shrader valve on fuel rail what it reads is what the pressure is from pump, around 60 p.s.i. all you need to do is hook up the guage and turn on key, you do not have to turn engine over, and if pump is good it will shoot up to 58 or 60 right now.

Feb 14, 2009 | 1999 GMC Jimmy

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