Question about 2003 GMC Sierra 2500HD

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How do i replace the 2003 gmc seirra2500HD fuel pump relay

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Posted on Jan 20, 2013


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017

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SOURCE: I need to find and change the fuel pump relay on my 1993 GMC Safari. Any help?

I don't have the whole solution, but I do know that my fuel pump is in side the gas tank on my GMC Safari. Hope that helps!

Posted on May 08, 2009

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SOURCE: 2003 GMC Yukon - fuel pump

Check your ECM fuse. There should be 2 fuses for your ECM. It's the ECM that controls the function of the fuel pump. Good luck friend and it's also common for the wire harness from the frame to the fuel pump to go bad due to corrosion from the bad weather we get in the winter and rainy spring and fall. 

Posted on Sep 04, 2009

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SOURCE: 1997 Gmc Sierra fuel pump relay has no power

check fuse and fuse panel connections

Posted on Oct 29, 2009

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SOURCE: How do you replace a fuel pump on a 2003 gmc envoy

unfortunately you will need to drop the gas tank will need a jack and jack stands for safety reasons and some tools sockets - {deep-well} and screwdrivers and patience and hopefully a warm area and pliers ........if you decide to do this first i can give you more detailed assistance on what to expect as well as difficulty level etc.....a few hours i assure you a bit of difficulty depending upon your mechanical skill and health i know i had to have mine sent out as i could only get it 3/4 the way out and i have been an auto/body mechanic and suspension paint metal etc for over 34 years but my health issues restrict me from even the simplest of tasks at times i hope this helps you in making a decision and ...................ensure in fact it truly is the fuel pump 1st have you determined this yet ? a pressure test can be made for free from most parts stores and a few major repair franchises

Posted on Dec 09, 2009

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SOURCE: 1998 gmc 2500 wont keep running

The anti thieft system is keeping it from running.

Posted on Dec 13, 2009

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Go to free wiring diagrams ! Enter vehicle info. Then click on engine under systems , then fuel controls under subsystem . There you will find fuel pump electrical circuit diagram ! Here is a testing GM fuel system video ! GM Fuel Pump Relay Testing

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GM Fuel Pump Relay Testing - YouTube

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How to manually jump a fuel pump from the fuse box ... Is this the same on the 2003 cavalier chevy? ... I go through fuel pumprelays often on my 99 GMC Yukon Denali. ... Finally, fuel pressure totally drains after motor turns off. ... run right, it would sputter when you hit the gas and finally just would not start.Missing: 7500

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Check the fuel filter, fuel pump relay, or the fuel pump itself, inside the tank, to see if they're in good working condition. Might try resetting the computer, sometimes this solves alot of simple problems.

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1 Answer

My 2003 gmc 2500hd will not start. the battery is

check that the oil level is full and check to see if the low oil pressure switch has fallen off it's between the engine and firewall just below the distributor, als tun the ingtion key on and listen to see if you here the fuel pump come on for two seconds, if it does check fuel filter. if it does not check fuel pump relay and blowout prevention valve reset it if it's not allowing fuel to flow will bwe on same side of fill hose tank.

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From red light truck started sputtering and and stalled out

Hello. The GMC Sierra has an electric fuel pump so you should ensure that its fuses and relays are working before checking it. You may need to clean your fuel pump or replace it if your gas tank is not empty, but your vehicle has difficulty getting fuel. The GMC Sierra comes in a variety of styles and trim levels that can affect the replacement fuel pump you choose.

Mar 02, 2010 | 2003 GMC Sierra 1500

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make sure you got power to pump and the the ground is good if ok then replace fuel pump if not check fuses and relays

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Have you verified voltage at the fuse and fuel pump relay. There is one fuse in the underhood fuse box.
Let me know.

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1 Answer

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Sounds like the fuel pump relay is bad.

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