Question about 2003 GMC Yukon Denali

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2003 gmc yukon denali xl

Fuel pump not operating no fuel to injectors and service panel says conductor 2 I need help??

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Sounds like the fuel pump relay is bad.

Posted on May 21, 2009

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Posted on Jan 02, 2017

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Tighten gas cap and then service engine soon lit. Replaced with factory new cap and reset service engine soon light by disc negative battery lead. about 2 drives later the tighten gas cap lit again then...


Doesn't completely sound like a fuel pump problem...sounds like a vacuum line problem .... check your pcv ...and vacuum lines and when was your fuel filter last changed and how many miles are on the car...your fuel pressure regulator solenoid needs to be dry on the vacuum side too...diaphram could be leaking but if you can't find an obvious problem I would definiately find a qualified mechanic to dive into it...do you have access to a scan tool to read the trouble codes?

Jun 03, 2011 | 2006 GMC Yukon Xl Denali

1 Answer

I have a 2003 yukon Problem with the GMC Yukon XL


What size engine ? 4.3 L vortex P0300 random misfire code is usually associated with vacuum leaks , but could also be low fuel pressure , plugged fuel filter , fuel pump problem , clogged injectors etc... doing fuel pressure an flow testing would confirm or eliminate that as a problem . Fuel injector balance testing would confirm or eliminate clogged injectors .

Mar 24, 2017 | 2003 GMC Yukon XL

1 Answer

Were can I buy a fuel pump for 2003 yukon xl denali


Hi, you can get the fuel pump to you 2003 Yukon XL Denali from Auto Parts Warehose for $166.16 with free shipping within the U.S.A. Contact them on 1-877-809-1467...

Oct 03, 2010 | 2006 GMC Yukon Xl Denali

1 Answer

Were the air pump for the shocke located on a 2003 yukon denali


Should be located on the outside of the frame rail just below the fuel filler neck.

Sep 23, 2010 | 2005 GMC Yukon Xl Denali

1 Answer

Ran out of gas. After adding gas, GMC Yukon XL Denali (2003) will not start. Is it as simple as changing out the fuel filter?


Under the hood in the fuse box you need to check two fuses, PCM1 and PCM B. If both of those are fine the next step is to look at the right side of the engine along the fuel rail. Tiy;ll see a black cap. Remove the cap and turn the key to the on position and then press the valve inside to see if there's any fuel coming out.

It's quite possible the fuel pump burned up when you ran out of fuel. When you turn the key to the on position can you hear the pump activate and send the fuel to the injectors for initial start?

Oct 04, 2009 | 2006 GMC Yukon

1 Answer

2003 gmc yukon denali xl starts but gas not flowing engine could it be a loose gas cap or fuel pump. Fuel filter changed. Also what does service ride control mean Singlemom03


if your engine starts up and dies right away the you probably have a fuel pump problem and the service ride control mean that your air ride compressor has gone bad just turn your key to the on position and wait about 30 seconds you will here buzzing from the left rear wheel area if the compressor is working

Jul 18, 2009 | 2006 GMC Yukon

4 Answers

Location of fuse box/panel for 2004 yukon denali xl


There are 2 fuse panels in the Denali.
One is a panel on the drivers side, its on the dash but facing the door.

The ohter is under the dash and above the pedals, this one is much tougher to access.

Your Owner's Manual should tell you where the fuses are that you need to access.

Jun 15, 2008 | 2004 GMC Yukon

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