Question about GMC Jimmy

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2001 GMC jimmy starts and runs great when temp is above 20 degrees but below 20 turns over but will not fire.Put a fuel pressure gauge on and it was good

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Check the spark when the no start happens again.

Posted on Dec 16, 2016

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Posted on Jan 02, 2017

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1 Answer

I have a 1991 GMC jimmy. Run fine until I pulled


sounds like the fuel pump is bad. check the fuel pressure with a gage is should be 35lbs. if it still won`t start now have someone try to start it while you hit the fuel tank bottom with something if it starts the pump is no good.

Sep 09, 2014 | 1991 GMC S-15 Jimmy

1 Answer

Is it difficult to replace a fuel pump on a 2001 Jimmy


If you have checked the fuel pressure with a gauge and it is below spec, the pump is inside the gas tank so the tank would need to be dropped.
You would need to check the fuel filter and also make sure the pump is getting power before replacing the pump.

Apr 03, 2013 | 2001 GMC Jimmy

1 Answer

2001 Jimmy had fuel pump problems. Replaced fuel pump with after market and fired right up. Week later I stop run into house, then back out completely dead at the key. Replace starter, fires right


I'm a little lost here, but if it will start on starting fluid, the ignition system is working.
Most V-6 GM trucks take at least 65psi of fuel pressure to start. Most aftermarket pumps don't do the job.
I would check the fuel pressure with a gauge next.

Jun 28, 2012 | 2001 GMC Jimmy

1 Answer

2001 GMC Jimmy fuse problem INT BAT fuse?


This would be like looking for a needle in a hay stack, the right way would be to get a wiring diagram showing wiring from INT BAT and tracing the wires to make sure if its not short to ground.
And dont put fuse more then 50amp or else the wiring will melt and you may have fire.

Jun 21, 2012 | 2001 GMC Jimmy

1 Answer

Jimmy wont start sometimes


Do you have the 4.3L engine with spider fuel system? That system is noted for problems. Key on engine off, fuel pressure, 60--66 psi, use a fuel pressure gage. It needs that pressure to start, after it starts, it will run with less pressure.
There could be other issues? Engine cranking, you have spark at the plugs and fuel injector pulse?

Jun 26, 2017 | 2001 GMC Jimmy

1 Answer

Have a 2001 gmc jimmy...drove home gas gauge read 1/4 tank..next day cranked over but wont start..gas gauge reads empty...put $10.00 from spare gas can..cranked over but no start ..gas gauge still reads...


chevy and gmc trucks have an on going problem with this,turn the key on,and get a rubber mallot or a hammer and hit the bottom of the fuel tank a couple of times,this will unstick something in the fuel pump/sending unit.

Jan 05, 2010 | 2001 GMC Jimmy

1 Answer

Wont start no fuel pressure


this vehicle needs 60 lbs of fuel pressure to make the popit type fuel injectors to open you need to check with pressure gauge

Apr 15, 2009 | 2001 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

1 Answer

1994 GMC Jimmy hard to start and runs rough when first started


did you do a fuel pressure test? if you havent do it its cheep an at least you can elimanate that. if thats not an issue, then there is only two other things crank sensor, and if there is one cam sensor.

Feb 02, 2009 | 1994 GMC Jimmy

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