Tip & How-To about Chevrolet Blazer

Fuel pump wiring for aftermarket GM fuel pumps

When replacing fuel pumps in chevy or gmc trucks and suv's the aftermarket fuel pumps come with new plug and wire connectors. Which requires you to cut off the old pigtail and connect the new pigtail to the vehicles wiring, the reason the manufacturers of the new fuel pumps did this is to fix problems with the old style connector that was on the factory unit.

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2000 chevy truck 3500 check wiring on fuel pump harness


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How to Install New GM Wire Harness on Fuel Pump Module ...

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https://www.youtube.com/watch?v=FffdzqknP3k
Apr 20, 2012 - Uploaded by Airtex Pumps
This video is about how to install a new Airtex fuel pump module into some GM ... fuel pump and gas tank to a 98 internal fuel pump and gas tank on my truck 88 gmc. the wires are a little different. .... Check the power & ground at the pump. ... CHEVY SILVERADO FUEL PUMP CHANGE OUT.2500HD 2001.

How to test an electric fuel pump - YouTube

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https://www.youtube.com/watch?v=Q3ZiTsKCdO8
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2001 GMC 3500 8.1L engine with no fuel pressure. In this video I am showing how to test the fuel pump electrical circuit using atest light and scan tool. ... seconds on the ground wire. when i unplug the harness from the the fuel pump .... need help newfuel pump chevy venture 2004 runs for a few days then ...

How to Install Fuel Pump E3947M in 1997-2000 Chevrolet ...

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https://www.youtube.com/watch?v=9LLLRVnItbI
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Applications: 2000-97 CHEVROLET/GMC C, K 1, 2, 3 TRUCK 262... Please check out our 'How to Install New GM Wire Harness onFuel Pump ...


Jan 22, 2016 | Cars & Trucks

2 Answers

changed fuel pump in gas tank 1997 buick lesabre now gas guage is messed up


Bad sending unit on the aftermarket pump, (take it back and put in a new one, have had that happen) or could be a bad wire connection, thourougly check your wiring first. (Most aftermarket pumps require you splice in a new electrical connector, check them out good first)

Jul 11, 2014 | 1997 Buick LeSabre

1 Answer

electrical plug on the fuel pump


take it back ...save $$ go to advance will have color code for pump

Aug 16, 2012 | Cars & Trucks

2 Answers

truck cuts off while driving. I replaced the fuel pump a few months ago. if i wiggle the wire harness it will restart


I have seen this and took me a long time to figure it out. The problem I have found was inside the plug on the wiring harness to the fuel pump. You can't see it unless you take the plug apart and it may be corroded inside. I don't know if this is your problem but check to see if you have power there and wiggle the wiring to see if it cuts out. Hope this helps.

Jun 12, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

1995 gmc jimmy 4wd 4.3 vortec when hot dies and won"t start, replaced plugs wires cap rotor, oil pressure switch, camshaft and crankshaft sensors, ignition control module. still getting spark and over 60psi fuel pressure. holds steady after key is off.


The problem is either your fuel pump relay is overheating our your fuel pump is over heating. They also have the problem with the wire connector on top of the fuel pump melts. This is a known problem with them, when you but a new fuel pump they give you a new connector and a service bullentin regarding this problem.

Apr 27, 2011 | GMC Jimmy Cars & Trucks

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