Question about 2000 GMC Jimmy

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2000 jimmy fuel relay switch

Need to find where the fuel relay switch in my 2000 jimmy

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Situated behind the battery next to the ABS and engine ECU it a small black box (not the one that says Klima)

Posted on Feb 02, 2009

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It should be inside the Fuse Relay Box under the Hood on the Drivers Side. The Diagram of the Relays should be on the Inside of the Cover, If Not, It is in the Owners Manual. Please Rate My Response! Thanks!

Posted on Feb 02, 2009

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Why dosnt my brake lights are signal lights work on my 2000 gmc jimmy ive checkt all fuses and bulbs thay are good


Most likely a Relay is out. Remove one from another say the horn's relay or the A/C's relay and switch it with your lights relay and if the lights are working, go buy a new relay to replace the A/C or horn relay.

Mar 29, 2013 | 2000 GMC Jimmy

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

We have a 7/99 GMC Jimmy in and it acts like a fuel cut off switch has popped. it cranks but no bueno. I can press the deactivate button on the alarm pad and the flashing "security" lights stops...


There is no reset switch for the fuel pump in this vehicle according to the stuff I am finding. There is a relay located in the power distribution box under the hood. You will need to test that, if it is working then the problem, assuming it is the fuel pump not powering up, is most likely the fuel pump itself. From what I am seeing these vehicles have a history of fuel pump problems from the Anti Rollover cutoff and accident safety switch built into the pump itself.

Feb 16, 2011 | 2000 GMC Jimmy

2 Answers

2000 GMC Jimmy 4.3L CSEFI won't crank. Fuel pressure is 50psi and should be between 55 to 60psi. Fuel filter 1yr old and fuel pump is probably stock & needs replaced but never had problem before...


Check your starter and check your connections to make sure they are clean and tight. The low fuel pressure won't cause a no crank. Too low could cause a no start but not a no crank. I've had starters be bad right out of the box. But if that starter motor isn't turning either the starter motor is bad or the solenoid attached or the wiring to it is at fault.

Oct 06, 2010 | 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

Doesn't want to start, acts like it isn't getting


Fuel pump, fuel relay, fuel regualator, fuel injectors, camshaft positioning sensor, fuel filter, etc. Need special tools to diagnose properly, do you have them? Doubtfull, I don't have all of them and I've spent thousands on my tools. I can do a guessing game with you but I prefeer not to lead you astray.

Jun 12, 2010 | 2000 GMC Jimmy

1 Answer

2000 GMC Jimmy, getting a relay that intermittently keying on the


There is a short in the signal switch mechanism in the steering column. What you hear is the signal relay. When you brake does the sound stop? If it does then this is the reason. Excess wear and conducting grease has created this short. The switch can be acessed by splitting the steering column and using very small tools and fingers!! you can remove it. Detailed instructions can be found on the net. This is a common problem with jimmys, astro vans and pontiacs.

Mar 23, 2010 | 2000 GMC Jimmy

2 Answers

My 2000 gmc jimmy will not start. It will turn


Have you hooked up a fuel pressure gauge to the test port on the rear of the intake, drivers side. You can get a fuel pressure tester for about 40 dollars at a part store. It is a real good tool to have in your toolbox. If your Jimmy can't build 55 psi, it won't start.

Mar 06, 2009 | 2000 GMC Jimmy

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