Question about 2000 GMC Jimmy

Open Question

I have a 2000 jimmy,when i bought it the fuel gauge was not was jumping up and down and was unreliable.I put in a new pump,tank ,filter and gas cap. The guage again is not working properly.One minute you step on brake the fuel gauge will drop to empty and low fuel light will come on,after driving, it might shoot up to full when tank is only half and sometimes it is where it should be.Also when you leave truck parked for 8 or more hrs it seems you have to crank it to start as it not getting fuel.If I turn key to the on position and pause to let gas get from back to front it seems to start alot easier.Why is the fuel returning to the tank when not running? I have had the fuel pressure check and was told it was okay.

Posted by on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


SOURCE: 1997 GMC K1500 4x4 5.7 SFI injection system

Did you check the fuel filter?
or possably the catalitic converter is cloged, check the exhaust pressure.

Posted on May 27, 2008

  • 78308 Answers

SOURCE: shuts off while driving. no fuel pressure. pcm fuse blows/ fuel pump relay inserted.

Sounds like the fuel pump is shorted.

Posted on Nov 03, 2008

  • 1118 Answers

SOURCE: 2000 gmc jimmy wont start fuel pump comes on and cuts off...

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.

Posted on Feb 14, 2009

  • 1 Answer

SOURCE: Engine cranks, won't start. Three days later, it starts???

probaly a fuel pump its common for vehicles to do that the best thing to do next is a fuel pressure check to verifiy its the pump

Posted on Apr 15, 2009

  • 1055 Answers

SOURCE: 1998 GMC Sierra- runs rough then stalls when

had this problem on my neighbors 98 chevy truck with the same engine !!
it turnd out too be the fuel pressure regulator,you have too pull the upper intake too replace it!!

Posted on Jun 06, 2009

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

2000 Dakota quad cab fuel gauge wont work, jumps to full when started, fuel pump has been replaced. What next?

Check for a frayed wire touching metal and grounding out. The gauge works on resistance and it registering full indicates a short to ground. Either that or your gauge itself is bad.

Sep 01, 2014 | 2000 Dodge Dakota Quad Cab

1 Answer

I have a 2000 Chevy Silverado 1500 I put a fuel pump in and 2 weeks later it wouldn't start took it out put a new one in worked for about 8 months but my gas gauge never worked right then that one failed...

It should not need to be pushed down to put the retaining ring on. The pump is hitting on the baffle and the float evidently is also. That would be why the gauge isn't working. If the filter sock is not on the bottom of the tank, it can only pick up fuel from the height it is sitting on. Don't know if the baffle is loose, but would pull the pump back out and look inside to be sure the baffle is open to the bottom where the pump should be dropping in. Hope this helps

Nov 26, 2013 | Cars & Trucks

1 Answer

2001 jimmy fuel sending unit

if you take the time to drop the fuel tank you might as well replace the fuel pump module. this will come with a new fuel pump and level sending unit. DO NOT USE AN AIRTEX brand. they will leave you with more problems! Get an a/c delco or delphi pump. make sure to replace the fuel filter at the same time.

Feb 09, 2012 | 2001 GMC Jimmy

1 Answer

I have a 2001 GMC jimmy sport(2door)..4.3 ,,The fuel pump quit working and fuel gauge was off , So i bought a whole new pump assy and installed it in tank,, Now i got no fuel reading or pump working Took...

I would replace the harness going to the pump assembly. They are notorious for going bad. A lot of the new pumps come with it. Hope this helps, TJ

Aug 06, 2011 | 2001 GMC Jimmy

1 Answer

Fuel gauge wont work 97 jimmy

Common problem, it can be a ground wire (not any ive seen) the float assy can be bought through your local gm dealer instead of buying the whole pump assy.

Jul 23, 2010 | 2000 GMC Jimmy

1 Answer

Gas gauge dont work jumps back and forth is there a ground?

if it jumps really fast you probably have a bad gauge/instrument cluster. if it moves back and forth with a slower/normal rate of movement you probably have a bad fuel level sending unit located in the tank.

Mar 23, 2010 | 2000 GMC Jimmy

2 Answers

Gas guage occassionally jumps up/down. The


Oct 29, 2009 | 2001 GMC Jimmy

3 Answers

Fuel gauge jumps around

Depending on the severity of the problem, Sea Foam fuel additive can fix this (or at least lessen the crazy jumping around). It's available at NAPA. It worked on my Jimmy. However, in my case gauge started jumping around with less than 1/4 tank (worked fine when full).

Mar 30, 2009 | 2000 GMC Jimmy

Not finding what you are looking for?
2000 GMC Jimmy Logo

Related Topics:

63 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

78289 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides