Question about 2003 GMC Sierra 1500

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After replacing uneeded fuel pumps where and how much is a circuit board for the melted fuel relay switch circuit board. Truck is 1997 GMC 2500 HD.

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Relay is on the pass side firewall.

Posted on Oct 08, 2009

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No fuel and no spark


fuel pump , fuel pump relay on fire wall, fuel filter, may all need replaced, pump in tank, inspect all wiring in this circuit, especially all grounds,, grounds get overlooked & that is sometimes the problem. I have a 1988 gmc 2500, I 'm talking from experience. can you hear if fuel pump runs for 2 seconds, when you turn key on ? if not, ground problem or pump problem. relay has a fuse in it, check that. check all fuses. NOW, spark ! coil ? plug wires ? distributor cap & rotor ? replace them if you haven't !!!!!!!!!! get to work, see how you do ! good luck !

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96 chevy truck, fuel pump relay switch (located under the hood, driver's side wheel well) keeps shorting out and melting fuse panel


I would replace the fuel pump and the fuel pump connector, both have problems in this year that cause excessive current draw and blow the fuse and overheat the system. If the relay socket terminals are discolored from heat that must be replaced as well. Of course before replacing any parts have a GM dealer confirm the problems i have guessed are to the cause.

Jul 09, 2012 | 1996 Chevrolet Silverado 2500

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I just started my 2002 2500 series 6.5 duramax truck it ran for about a minute then died now it wont start


Have your fuel pump fuse or relay checked first, second I would replace the fuel pump, lastly I would look at a malfunctioning fuel pump.

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2 Answers

1998 gmc 2500 sle 5.7 wont stay running


Theres only one fuel pump relay, unless you have dual tanks. Be sure you have 55-60 psi fuel pressure. I "think" the oil pressure switch supplies power to the fuel pump after the engine is running.

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The anti thieft system is keeping it from running.

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Where is Fuel Relay for 2004 Dodge Ram 3500 Diesel Truck


it doesn't have a fuel pump relay it has a fuel pump control unit and it is located on the chassis back quarter drivers side near the tube cross member for chassis on top of chassis rail near bed mount. locate the rear springs front perch and it will be above that on top of rail.

hope this helps. good luck and please ask any question you have.

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1 Answer

Fuel pump fuse located on 1997 gmc sierra


The fuse is actually a Relay Switch and its located in the Fuse Relay Center on the driverside of the engine compartment. The Black Box is labled Fuse Relay Center, the diagram on the cap displays which Relay is the Fuel Pump relay...the Relay switch is usually $8-$15 depending on where you shop

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2 Answers

1994 GMC Sierra 2500 won't start


definitely could be something smaller. Like a relay....even a filter.
Few things to try:
Just turn the key to on, not start and see if you listening to the fuel tank if you can hear the pump going. If not, its either the pump or the relay.
Most of these trucks have another switch that kicks in after the enigine is started and runs the pump so you may be able to spray starting fluid in it while cranking it and get it to start. Then the other switch may kick in and run it. that will let you know if its the relay or what. Let me know what you find. I just replaced a relay on a 93 and it was only $8.....worth a try. Also, there will be a fuel pump fuse, probably close to the relay, could be that!

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1 Answer

Is there an inline fuel filter in a 1997 gmc 2500 sierra truck wi


On the drivers side frame rail (inside) is your fuel filter. Cheap to replace. But if you don't hear the pump cycling prior to attempting start it is more than likely pump in the tank. Check fuses first though. Big job

Dec 25, 2008 | 1997 GMC Sierra K2500

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