Question about 1999 GMC Sierra

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1998 4.3 1500 sierra gmc

We put a new fuel pump and filter in and my truck wo't start can you tell me the problem i did all that and it also has spark now wat??

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  • Moe May 11, 2010

    Have you gotten an aswer that can help yet? If you would repost your problem from the start then I can help you. Moe



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Check fuel pump relay outside under hood there is also a pump jumper on driver side single red wire with plug on end where harness comes out of firewall hook up to bypass and see if pump is working also check to see if you plugged pump back in when replaced

Posted on May 24, 2009


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Related Questions:

1 Answer

My 98 gmc 1500 wont start its getting fuel and spark and air . after i take the key out the fuel pump is still running for a min or two i just put a new fuel filter in.

If your fuel pump is continuing to run with the ignition turned off, there is something terribly wrong. I don't even know where to tell you to start without seeing the vehicle myself. If it is getting fuel and spark, the only thing left to keep it from running is compression. I would recommend having a professional take a look at it. This just doesn't sound right.

Feb 22, 2011 | 1998 GMC Sierra

1 Answer

I have a 1989 GMC sierra 4.3 Liter, fuel pressure

u can do the check the other way around/ disconnect the fuel line that supply the injectors/ put the pipe in a small plastic container to see if fuel is being supplied by the pump and avoid fuel spill in ur engine/ crank the engine for at least 5 seconds see if the fuel squirts with pressure/ if it does then ur fuel pump is ok / blockage is somewhere down the fuel line/ u can check fuel lines by blowing it with air but u gonna need the help of an air compressor.....

Apr 09, 2010 | 1989 GMC Sierra

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02 sierra 1500 5.3 starts very quick when cold but when hot cranks a lot before starting,I replaced fuel pump and filter did not help.It has 55 psi fuel pressure but falls below 40 kinda fast.???

Feb 22, 2010 | 2000 GMC New Sierra 1500

1 Answer

I have a 2000 gmc s1500 z71 5.3 v8. I think i need a new fuel pump but not sure, Some days it startes up,Sometime it starte's and dies wont crank up till i jar the gas tank.Thanks Clay

yep,that sounds like the fuel pump is getting hung up on the bearings.don't forget to put a new fuel filter on too!
you'll see the blackness of the fuel that got stuck in the filter.

Dec 08, 2009 | 2000 GMC New Sierra 1500

1 Answer

Engine cranks but will not start

fuel filter or most likely the injectors are done

Oct 07, 2009 | GMC Sierra 1500 Cars & Trucks

1 Answer

1999 gmc sierra 1500 wont start after fueling up

could be as easy as a clogged fuel filter or as bad as putting in a new fuel pump

Jun 26, 2009 | 1999 GMC Sierra

1 Answer

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!!

Jun 04, 2009 | 1998 GMC Sierra

1 Answer

1998 4.3 1500 sierra gmc

did you check the fuel pump relay? often times this get's weak with time and when it goes bad you wont get fuel. it's located in the junction box under the hood. i just take the relay from the a/c clutch to check it. this should solve it. please rate this

Sep 01, 2008 | 2000 GMC Yukon XL

3 Answers

1996 GMC Sierra 1500 truck fuel problem

Have you check the injector relay or maybe a fuse for injectors.

Aug 26, 2008 | 1996 GMC Sierra

2 Answers

2002 gmc sierra truck won't start replaced filter

truck turns over for a few seconds then just spins

Jul 05, 2008 | 2002 GMC Sierra

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