Question about Chevrolet Suburban 1500

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Harness colors don't match new colors to chng fuel pump connector

1999 Suburban harness colors don't match described colors for changing fuel pump connector module from Metripack 150 to GT280. Have gray, 2 black, and 1 purple, but need gray, black, org/blk, purple.
Is the larger diameter black the real black and other one just missed its orange stripe?

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I know what you are talking about, last time i looked at the wires on the pigtail i cut off and i determined which color went to each pin location. then transfered my findings to the new pigtail.

Posted on Nov 17, 2009

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On 1999 grand marquis, cut fuel pump assembly wires 3. On new one, the wires are different colors. How can i find out how to match them up


Match the location of where each original color goes to the same location on the new pump regardless of color and connect them. GOOD TO GO!

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2004 buick centry.how do i hook up new fuel pump.with new wire connector? Im not sure how to hook the new plug up.


Are the wires on the new fuel pump connector color coded? Can you match up the wire colors? If not color coded, can you go abcd on the wiring connector? Compare one connector to the other.


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Working on the fuel pump wiring harness for 1999 isuzu rodeo the colors are not matching up with the vehicle wiring harness. delphi fuel pump wiring harness colors are 1. gray 2.purple 3. black 4.blac


USA car?
where are your hands, now.
where is this harness. at , EXACTLY?
my guess , new fuel pump and is the wrong pump?
finding Isuzu parts in USA is hard. after thier departure.
also on allcars pump vary by engine options.
so no engine stated. so cant help much at all.

but if in usa and if your engine is listed here.
here are all the pumps made after market here. in USA
fixing cars is easy
finding good parts is very hard, and takes skill.

gas engines not diesel.
3.6L shown.
https://www.rockauto.com/catalog/x,carcode,1355857,parttype,6256

are you replacing the whole assemblY ? it just a connector on top of rack , no pig tails
but are you replacing the pump ON THE RACK
that different and lots harder.

do say.

Feb 08, 2015 | 1999 Isuzu Rodeo

1 Answer

How do I wire in the fuel pump on a 1992 F-150


It appears from a wiring diagram the yellow/white and the pink/black go to the fuel sending unit. Match the black wires together.

You can see a wiring diagram here:

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Fuel pump wire color


The gray wire goes from the pump relay to the pump. The black white wire is the ground for the pump. The purple is for the gauge on the dash and the black is ground for the sending unit. I don't list a white wire being used.
If the colors on the truck don't match the tank, you'll have to test them to verify each circuit.

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What is pigtail wiring harness for 1999 gmc suburban


PIGTAIL WIRING HARNESS CAN BE ANY OF SEVERAL WIRING HARNESSES ON A VEHICLE.IT MEANS THE WIRES WITHIN THE HARNESS EXIT OR TERMINATE WITH A CONNECTOR AT THE END OF THAT PARTICULAR CIRCIUT OF SAID HARNESS.

Oct 10, 2012 | 1999 GMC Suburban

1 Answer

My aunts 1997 Jimmy was towed to my Dads .Cranks but no start,after batt. charged. They had been hitting bottom of fuel tank,and would start.But not anymore . Dad replaced pump.Had to rewire connectors for...


I would recommend checking the "re-wire job and make sure it is done correctly. Many GMs have had problems with the connectors at the fuel pumps. The fuel pump manufacturers have re-designed the connector to correct the problems they have been having. This is WHY the re-wire is required. The fuel pump kits usually come with the new connector to complete the job. However, some of the kits have wire colors that do not match the wire colors on the vehicle harness, Some of them also have "duplicate" colors, like two black wires. One will be a larger gauge than the other one. I had a couple where the white wire on the new connector had to be wired to the purple wire on the vehicle harness, etc. If your dad did not follow the directions EXACTLY then this could be the cause of your problem. (The pump MAY be running backwards)

Aug 03, 2011 | 1997 GMC Jimmy

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I have a 1999 gmc 1500 with fuel module problems there are 2 pumps and i have the other pump. the differance looks like 1 of the plugs on top. i have the plug i would like to make work. they are both 4...


hi, if you bought a new fuel pump assembly you are one of many who had problems with the connectors. so your not alone. the fuel pump manufacturers changed the plug configuration to solve a problem with the existing plug, the plug being replaced is the square plug on the left. the new pump assembly came with the new pigtail and you need to cut off the connector(close to the plug so you have enough wire) and ****-connect the new plug onto the trucks wires. the wires will be color coded to match the old wires, they maybe dirty and oily so you will probably have to clean them to tell the difference. also the pump should come with a diagram to help solve the wire problem.

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1 Answer

1999 suburban starting issues. fuel gauge acts crazy, could it be grounding problems?


fuel pump assembly in gas tank. comes with new connector. should take care of it all

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