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I am having a problem with my 5500 gmc won't pull fuel from the back tank and the pump in the frame work

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  • 11 Answers

Yep, u got 2 different pumps and a pump assist, u can test each pump but not the assist, after testing both tank pumps good assume bas assist, also a pinhole in the line can cause u to loose pressure and sometimes even your prime.

Posted on Jan 07, 2013

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6ya6ya
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Posted on Jan 02, 2017

psds4
  • 293 Answers

SOURCE: How TO REPLACE A IN TANK FUEL PUMP ON A 2000 gmc jimmy

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800a13e9
hope this helps

Posted on Oct 11, 2008

  • 8 Answers

SOURCE: 1997 gmc sierra p/u 5.0l 2wd needs fuel pump

NO dont drop tank, you will be sorry, take bed off, only like 6 or 8 bolts, and you will have more room to work, and its a pain in the *** to undo the lines and drop the tank, you cant get in there to do it, but just basic tools nothing special, be sure and try not to make any sparks while takein off that ring to get the pump out, and put an ac delco pump on there

Posted on Feb 11, 2009

badealer888
  • 414 Answers

SOURCE: DUAL fuel tanks on a 1998 GMC 3500HD one not working

There is a balance pump that keeps both tanks within two gallons of each other.

Posted on Jun 23, 2009

  • 51 Answers

SOURCE: 1988 f250 no power at fuel pump ,no fuel press.

Behind the air cleaner box, there are two relays. Over time they corrode and get stuck...change them out and see if that improves the situation.

Posted on Aug 20, 2009

  • 95 Answers

SOURCE: 1987 f-150 dual tanks fuel problem

You are right. There are three pumps. It sounds like the transfer pump in the front tank is bad. The in tank pumps just supply the high pressure pump to keep it primed. You need the front pump.

Posted on Sep 21, 2009

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1 Answer

Getting spark fuel but won t start


If it is a fuel line you would smell and see gas drip where you park most likely, unless it is up over frame and drying prior to hitting the ground which is possible. Smell gas while parked? Get up under it and look for wet spots on fuel line. Are you getting fuel through line? Pull from under hood and check pressure.

Mar 03, 2014 | GMC Suburban Cars & Trucks

1 Answer

Engine turns over but wont start. 1997 gmc jimmy


Fuel Pump or starter. Since you say it's turning over but won't start I'd say it's your fuel pump. You'll probably have to drop your gas tank to fix this problem as your fuel pump is in the tank. You might be able to just loosen the straps and lower your tank a little to access it without removing the whole tank. Check around to local junk yards for this part and you'll probably find it for half the price as new. Make sure you can get your money back if the used pump doesn't work before you pay for it though. Don't forget to run fuel system cleaner (2 bottles to a full tank) once a month.

Oct 15, 2011 | 1997 GMC Jimmy

1 Answer

Won't start fuel pump replaced new tank and relay have fuel after fuel filter runs if I put fuel down throttle body. this is on a4,3.


Nephew had similar problem on different vehicle - had spark to plugs, limited gas, everthing else checked. I did one thing first - check for two fuel filters - one in the tank was only screens and one in the line itself. Found a little in line filter just outside of engine compartment under car next to frame that looked like it had never been changed - partially clogged - replaced it.Almost ran but would not keep running. I had rotor and cap pulled - found that the screw holding rotor in place was loose. The rotor edge next to plug wire leads was chopped up and the cap's plug wire leads were heavily oxidized. Replaced them and got it running but a little rough. Pulled the spark plugs and found gaps from 25 - 100 ---replaced the plugs with correct gapping and it ran really well.

Aug 25, 2011 | 1991 GMC S-15 Jimmy

1 Answer

I have a 1999 gmc sierra with (as of 30 days ago cat. converter, fuel pump and filter, cap and rotor) changed in garage. regular oil changes, tune ups as of 8 mths. it has lots of cranking power, but...


If i understand you right the truck has been sitting for two years.If it has been sitting that long without running or moving the gas has turned to varnish...I suggest that you drain and refill the fuel tank,and replace the fuel filter located on/in the frame rail on drivers side.

Jun 18, 2011 | 1999 GMC Sierra

1 Answer

1993 GMC Jimmy won't throttle up..changed fuel pump...sounds like fuel is running back into tank


Check fuel pressure regulator.Start engine hook fuel gauge to fuel line check pressure ready then pull the vacuum hose of the fuel regulator if pressure rises 5-10 psi then its good.

May 13, 2011 | 1993 GMC Jimmy

1 Answer

2002 gmc extended cab sonoma fuel pump replacement


Drop fuel tank, use brass drift and rubber hammer to unscrew retainer ring on top of tank. (Don't use anything that can cause a spark) Very carefully pull fuel pump and fuel level sensor out of tank.

Separate pump from unit and replace with the new pump. Wouldn't hurt to replace filter sock or filter if this model has one.

Carefully slip unit back into tank, replace seal and locking ring, ensuring it is tight.

If hoses and wires are long enough I check for proper operation before raising the tank all the way in place.

Once satisfied pump and fuel gage is working, replace tank in frame.

Apr 09, 2011 | 2002 GMC Sonoma Extended Cab

2 Answers

The computer analyzes that I have a fuel filter problem but i can not locate the filter. My Vin #1GTEK14V04Z228772 GMC 2004 Sierra 1500


its probably an in tank filter. look for accsess to fuel pump through a plate in the boot or under the back seat some cars theres need to drop the fuel tank to accsess the pump/filter assy

Apr 06, 2011 | 2004 GMC Sierra 1500 Crew Cab

2 Answers

It will start sometimes then other times it wont start at all new fuel pump and fuel pump realy


check the wiring going along the frame,I had a 95"ford explorer ,that I replaced the fuel pump in.when I tested it before mounting the tank back,no power making it to the pump.where the wiring turns off the frame towards the top of the tank(to the f.pump)a factory connector was bad or going bad.sometimes would crank and sometimes not.being that it was 2am in the morning,I cut the connector out,and straight wired it,and was good until i could get another connector....check it out.

Oct 28, 2009 | 2002 GMC Sonoma Extended Cab

2 Answers

Engine turn over but won"t start no fuel no fuel pressure, how to run test with out removeing the tank?


first thing check fuel filter. it sets along the frame. Did you check the fuel pump fuse? Make sure there is power going to the pump.

Sep 18, 2009 | 2000 GMC Jimmy

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