Question about 2003 GMC Yukon XL

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2003 yukon xl turns over fine wont start.

Fuel pump fine. bran new battery. just added 5 gallons of gas to tank. was having the problem and yesterday it started fine plugged up to see if any codes and none. today went ot drive it for first time since thinking that problem was solved and it wont start again..

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Someone will need to figure out if you are lacking fuel to the injectors or spark to the plugs to proceed.
You say the pump is fine, have you checked the fuel pressure, and do you know if the injectors are getting voltage and ground pulse from the computer ?

Posted on Dec 11, 2012

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Posted on Jan 02, 2017

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2 Answers

Why does my 2003 Yukon XL turn over but won't start?


Does fuel pump run ? Remove fuel cap. Have someone crank it for you,you should hear fuel pump running. If not bang on bottom of tank while cranking. If it starts fuel pump will need replacing , if not check for power to pump, if it has power,replace pump. If no power, check relay for operation

Apr 11, 2015 | 2003 GMC Yukon XL

1 Answer

My 2003 yukon died but was low on fuel


If the engine does not crank, I doubt it has anything to do with the fuel system. You would need to find out if you have power at the starter posts when the key is in start position. Will it crank in neutral, and is the security light flashing ?

Jan 31, 2014 | 2003 GMC Yukon XL

1 Answer

Denali low fuel indicator


Have a friend lay/sit/crouch by the back of your truck(Where the tank is), and turn the key on. they should hear a "whirring" sound.
If they do, the pump is fine(Check fuel filter). If they hear nothing, replace your fuel pump!

Aug 03, 2012 | 2002 GMC Yukon XL

1 Answer

Ran out of gas and now it won't start after adding 5 gallons


the fuel pump is cooled by gas so if u run it low alot or {OUT} it can burn it up
keep that tank at 1/4 or u will pay!!!

Jul 21, 2012 | 2002 GMC Yukon XL

1 Answer

My yukon sometimes wont starterd until 10mins,tehy told me it was the gas pump. i replace it and still does it


COULD BE DIRTY FUEL INJECTORS LEAKING WHILE ENGINE OFF FLOODING OUT SPARK PLUGS.TRY THIS REPLACE AIR FILTER.CLEAN FUEL INJECTORS BY ADDING A BOTTLE OF SEAFOAM TO 3/4 TO FULL TANK OF GAS SEE WHAT HAPPENS.

Mar 02, 2011 | 2003 GMC Yukon XL

1 Answer

My yukon ran out of gas while at an idel and now after i put in 7 gallons of gas checked all fuse boxs, I still have power but my cluster panel does not register anything with the gauges and does not turn...



When you say "turn over" do you mean "it wont start" ? These two things are very different. "Wont turn over" is like when the battery is dead, you turn the key and nothing happens. "Wont start" is like it's out of gas. (the engine cranks but wont start.) I'm not being sarcastic or insulting, I just want to make sure we are on the same page.

One is a battery/starter problem and the other is a fuel/ignition problem. If it is dead like a dead battery, (except you know it's not because the headlights are still working, then you didn't run out of gas, seven gallons would have made it start. If what I just described is the case you may have a bad ignition switch. Kind of unlikley on somthing that new, but not unheard of.

These fuel pumps do not like to be run dry. They are meant to be submerged in gasoline for cooling. If it cranks but wont start it is most likley the fuel pump. I know, it seems crazy to put an electric pump in the gas tank but that's where it is. A new pump is going to cost about $300, plus labor. The tank has to come out...lots of fun. The pump sits on the very bottom of the tank and some times you can get them to run one more time by having someone turn the engine over while you bang on the bottom of the tank. It doesn't always work but if it does it saves you having to tow it some where to get it fixed. If you do get it running do not pass go, do not shut it off until you are ready to put a new pump in it. you wont get another chance. Since the part is spendy you want to make sure it's bad before you go buy one. Or pay someone to do it for you. Up at the intake manifold there is a valve on the fuel line (looks a lot like a valve stem on a tire) It is there for testing fuel pressure. Even if you don't have a pressure gauge, you can depress the valve ( be prepared for a healthy shot of gas, there is supposed to be about 50 psi) do this with the key in the run position. If gas just dribbles out...it's the pump.

Jan 20, 2011 | 2003 GMC Yukon

1 Answer

Yesterday i ran out of gas. I filled a gas can and put gas in but the car still wouldn't start. I have a 2003 gmc yukon denali, i was told by the dealer that the fuel pump may have burnt out. any advice?


i would say the fuel pump went out also here's a easy way to find out put your head down by the gas tank have someone turn the key on if you here a buzzing sound it's good if you hear nothing well get ready to drop that gas tank.

May 05, 2010 | 2003 GMC Yukon Denali

1 Answer

2003 yukon xl 5.3 motor flex fuel wont start with a 1/4 tank of gas. If you put a gallon in then it will. Is there a sensor that could be bad? I put a filter on it and it helped the first time then it did...


seems like you have a bad connection inside the tank at the fuel pump and it requires the gas to be at a higher level because its using the gas as a conductor to make the connection, i recommend you replace the fuel pump.

Jan 28, 2010 | 2002 GMC Yukon XL

1 Answer

My 2003 yukon won't start.while idling car ran out of gas


you are either lacking SPARK or FUEL. You put 5 gal in the tank, but is the FUEL PUMP working ? The lights and radio operating only indicate ther is power in the battery.. Hope this helps.

Apr 10, 2009 | 2004 GMC Yukon

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