1991 GMC S-15 Jimmy Logo
joe martinez Posted on Mar 03, 2012
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Where is the fuel pump relay on a 1991 gmc jimmy

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Johnny Brown

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  • Posted on Mar 04, 2012
Johnny    Brown
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Joined: Sep 18, 2009
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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.where is the fuel pump relay on a 1991 gmc jimmy - 3_4_2012_1_29_16_am.gif

Erick Ayotnom

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  • Posted on Aug 30, 2020
Erick Ayotnom
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Where fuel pump fuse located is?

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5 Related Answers

Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on Apr 05, 2009

SOURCE: FUEL PUMP NOT WORKING 1991

check the relay, then check the wire harness. and last check the fuel pump it self and that's in the fuel tank. but first check the fuse before you really get you haveds durty.
Good Luck

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alicantecoli

Colin Stickland

  • 22516 Answers
  • Posted on Nov 05, 2008

SOURCE: 1999 GMC Jimmy won't start.

firstly where is fuel pump relay as i have never seen a GMC jimmy sorry about that but have you ever seen a foden ?? well the first thing is to check the fuse,if fuse is ok which can be checked by looking at it as its transparent or a piece of wire with a light bulb .across the battery.to find the relay is easy if you dont know where it is,When this piece of americana decides to work just turn ignition on and listen for the click of relay ,then when it doesnt start listen for click again or rather an absence of a click,sounds more like a dodgy pump in the tank or the connections going to it.when it wont start try thumping the fuel tank with the ignition on and if it is a sticky pump you might hear it start then at least you will know where the fault is.Another fault that i have come across with relays is that where the relay is passing a heavy load then its possibe for the contacts to burn inside the relay.When this happens then if it is possible to seperate the relay cover and clean the contacts with a points file (remember them ) or a piece of fine emery paper if the cover breaks taking it apart then use a bit of black insulating tape to repair the cover.Thats assuming the pump is in the tank and not bolted to the chassis near the fuel tank but that design with external pump i havent seen on a europeon car for nearly 20yrs .

Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on Apr 05, 2009

SOURCE: 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.

Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on Apr 05, 2009

SOURCE: 1997 gmc jimmy fuel pump relay location

I believe it's the middle relay in the glove box. You should feel the relay click on when you turn the key's, but you only have 2 seconds.

Anonymous

  • 72 Answers
  • Posted on Jun 24, 2009

SOURCE: need location of fuel pump relay on 98 gmc jimmy

In the Underhood Bussed Electrical Center

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It sounds like an air lock or a fuel pump issue. firstly get the filter changed and bled through this might help. if the problem persists check the pump.

Regards

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

  • HOME bc_arrowbullet1.gif
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  • COMPONENT LOCATIONS bc_arrowbullet1.gif
  • COMPONENT LOCATIONS RESULTS
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
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You can Hear fuel running? Where in the tank? If so then it sounds like the fuel pump dettached from the supply line inside the tank.
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check the relay, then check the wire harness. and last check the fuel pump it self and that's in the fuel tank. but first check the fuse before you really get you haveds durty.
Good Luck
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1994 jimmy fuel shutown @spider?

Hi

A very common failure on these is the CPFI unit , or SPIDER as people like to call it.

There is one single injector which feeds each cylinder via a pipe and poppet. The injector becomes blocked and the engine won't start or run.

Before you go condemning this though, just make sure you have good fuel pressure because the fuel pressure regulator or fuel pump could also have a hand in the problem. Make sure the pump is running, and if not then check the fuse, the relay, and the pump itself.

Very best regards

Geordie
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