Question about 1988 GMC Jimmy

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Can anyone out there tell me where the fuel pump relay is located on a 1988 GMC Jimmy 5.7L? Thank-you

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Relay should be under hood in fuse box. check ecm b fuse

Posted on Nov 29, 2008

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Where is ecm on 95 gmc jimmy


The ECM on the jimmy, is located on the passenger side fender well by the overflow tank. But before replace the ECM, inspect the fuel pump and fuel pump relay. The ECM sends power to the fuel pump relay and if the relay has gone bad will cause the fuse to blow which will kill the the power to the ECM, in turn kill the electrical power to the ignition system.

Start by removing the fuel pump relay and swap it with another relay and see if the fuse will blow again, if is does. Disconnect the fuel sending unit wire harness at the frame and see if the fuse blows again, if the fuse stays good. Chances are your fuel pump has gone bad or the fuel filter is dirty/clogged causing your fuel pump to draw more amp and will need to be replaced or the wire harness from the frame to the sending unit has a short which is common on older Jimmy's.

Here is a link to the electrical harness throughout the Jimmy.
http://www.compnine.com/index.php?t=...lid=6872&uid=1

Mar 06, 2014 | 1988 Mazda B2200

1 Answer

Where is the fuel pump relay on a 1991 gmc jimmy


Thye fuelpump relay is located to the right of the brake booster. this is for a 1991 gmc jimmy (s-15)

I have enclosed a diagram to help locate the relay.

The most common reason for no fuel pressure on these trucks is not the relay but rather the fuelpump itself. the pump is located inside the fuel tank.

There is also a problem with the wiring to the fuel pump, you will need to locate the top of the tank and then off to side of tank is wiring .
This wiring comes off the top of the tank, you will need to check and there is connector problems..
there is one or two ground wires that come off wiring to top of tank which run to frame, check to make sure the grounds are good. if you end up with a bad pump you will see a notice to rewire a new fuelpump connector. hope this is helpful. good day.3_4_2012_1_29_16_am.gif

Mar 03, 2012 | 1991 GMC S-15 Jimmy

2 Answers

1988 jIMMY 4.3 replaced the fuel pump still


where is the pump fuel relay locateded in the jimmy truck 2.8 L V6

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Oct 08, 2010 | 1988 GMC Jimmy

2 Answers

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Sounds like fuel pump relay located on firewall on passanger side . If it is a 4,3 this is a big problem they had.

Oct 07, 2010 | 1988 GMC Jimmy

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Trying to find the fuse position in the fuse box for the fuel pump for a 1993 gmc jimmy. do not have the cover for the fuse box.


Here is a link to your fuse panel. The fuel pump is controlled by the ECM through the fuel pump relay which is located on the firewall by the brake booster.
http://ww2.justanswer.com/uploads/ZZdaryl/2009-12-20_014123_fuse.gif
Thank you for using fixya, and good luck

Apr 19, 2010 | 1993 GMC Jimmy

1 Answer

Where is the fuel pump relay for a 1991 gmc jimmy?


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Relay - Fuel Pump 1991 GMC Truck S15 Jimmy 2WD 4.3L TBI 6cyl The Relay - Fuel Pump Under hood, driver side, upper firewall, mounted in relay block

Jul 02, 2009 | 1991 GMC S-15 Jimmy

1 Answer

Location of fuel pump relay on a 97 GMC Jimmy?


Fuel pump relay is in your gluve box. I belive there are three relay's there and it could be the middle one. Getting old memory bad LOL.

Apr 04, 2009 | 1997 GMC Jimmy

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