Question about 1997 GMC Sierra

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2001 gmc sierra 1500 injector fuses and relays

My truck ran out of gas and wont start now, I put gas in, changed fuel filter and still nothing. I did find the fuel pump fuse to be blown, changed it, boosted it, it cranked and almost rolled over but still wont start? So that tells me that the fuel pump is indeed working but cant figure out why it wont start? I switched the relay out with the horn and then checked the horn and it's working just fine. I am now on the net again looking for answers, someone said to check the injector fuse and relay, but I don't know where to find it?

Posted by Anonymous on

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  • GMC Master
  • 496 Answers

Do you hear the fuel pump running on the prime cycle (when you turn on the key) (runs for 3 seconds) or when you have oil pressure?Have someone listen back by the tank for the wrrrrr.If you do have to change the fuel pump,make your life easy and just tilt up (lift) the pickup box from the drivers side to access the fuel pump.Takes 20 minutes to change it that way.

Posted on May 05, 2017

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Posted on Jan 02, 2017

emissionwiz
  • 75051 Answers

SOURCE: shuts off while driving. no fuel pressure. pcm fuse blows/ fuel pump relay inserted.

Sounds like the fuel pump is shorted.

Posted on Nov 03, 2008

csmock132
  • 4669 Answers

SOURCE: 1987 GMC sierra , no fuel pump power.

The inline fuel pump fuse on the passenger side firewall is good? Are you jumping it with 12 volts at the test lead or the fuse?

Posted on Jun 26, 2009

pippall
  • 1486 Answers

SOURCE: Fuel system for 1997 gmc jimmy

That is your EDU unit it has to be fitted back to get a good ground connection.

Posted on Aug 09, 2009

  • 39 Answers

SOURCE: Fuel system

fuel pump? carb? or throttle body? if injected the fuel rail should have a test point it will look kinda like a tire valve may have 15-40 psi under it auto places like auto zone and others rent kits for testing turn key forward listen to hear the pump in tank if injected push the valve in with a pen possible but becareful not to get in the way of gas use rag to catch it if nothing comes out most likely fuel pump but you will have to try to start the vehicle before attempting this raw check as line pressure falls off naturely in 10 min or so

Posted on Aug 18, 2009

Molson02536
  • 3854 Answers

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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My 2001 GMC Sierra just made a 600 mile trip. The next morning, the truck wouldn't start (full tank of gas). Replaced the fuel filter, banged on the gas tank. Tried to start the engine again, engine...


When your replaced the pump did you replace the fuel filter? You may have a fuel pump relay causing you some grief. I believe it is located in the engine compartment in the fuse center on the left inner fender. Check the relay and any related fuses. Check the electrical connection at the pump. They had problems with some of them and they would get kind of hot and distort and corrode. They have new updated ones that can be easily installed.

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Regards, Tony

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My 1993 GMC Sierra Z71 will not start. We changed the fuel pump, the throttle pressure regulator, fuel filter,and fuel pump relay. The pump gets gas to the injectors but from there it does nothing and goes...


Hi, that's possible but first check the ECM fuse and use a test light to check for power to the injectors on the red and white wires. The computer uses a number of sensor inputs to calculate the injector signals required. If these signals are not available, the computer cannot send the appropriate injection metering signal and will usually set the engine light. Is the engine light on?

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