Question about 2003 GMC Yukon XL

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The dash indicator light is on showing the

The dash indicator light is on, showing the padlock, on our 2003 GMC Yukon. The vehicle won't start.

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YOUR CAR IS IN THEFT SECURITY MODE.TRY USING DIFFERENT KEY.IF ANOTHER KEY DONT WORK.YOU HAVE PROBLEM IN THE SWITCH AND BCM.TO GET CAR TO STARTED TURN THE IGNITION WITH KEY IN TO ON POSITION WITH ENGINE OFF FOR 10 MINUTES.WATCH THE PADLOCK.IF IT TURNS OFF.TURN OFF IGNITION SWITCH FOR 5 SECONDS.THEN TRY TO START ENGINE.IF ENGINE STARTED PROBLEM IS IN THE IGNITION SWITCH AND BCM.IF YOU GET VECHICLE RUNNING NOT SAFE TO DRIVE BECAUSE THE VECHICLE WILL GO IN THEFT MODE SHUT OFF YOUR FUEL PUMP WHILE YOU ARE DRIVING IN HEAVY TRAFFIC. DONT LET GO GET IT FIX FOR YOUR AND FAMILY SAFETY.

Posted on Apr 25, 2010

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1 Answer

Starting then cuts off


Look for any indicator lights on the dash when this happens. Look mainly for a light that says SECURITY, ANTITHEFT, or looks like a car with a padlock thru it. If you see this light, go to this link. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Oct 15, 2011 | 1999 GMC Yukon Denali

1 Answer

2003 gmc yukon died now the ignition is locked


Sometimes on GM vehicles, the anti theft system can fail. This causes the car to stall and can lock the ignition to prevent theft. If you see a light on the dash that says "security". Then this is your problem. Info and solutions on this site. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Jun 15, 2011 | 2003 GMC Yukon XL

3 Answers

I have a 2005 GMC Yukon XL. The service 4WD is on.


Yes you do have to take it to the dealer, This is a common problem in these trucks. This is caused by a bad encoder sensor in the shifter on the side of the transfer case. The sensor can be replaced with out having to replace the shifter assembly.

THe best test is to get the code from the system. This sensor is a sliding resistor and the material wears off causing a false reading. That is why the lights were showing Nothing, but you were able to drive. The code for the sensor is C0327.

TBS: #PIP3480M: Rattle Drone Or Buffeting Noise At Highway Speed In 2WD Or DTC C0327 - keywords 246 2hi 2high 4WD auto awd buffet buzz case click indicator knock lamp light service tick transfercase transfer vibrati - (Mar 4, 2008) Vehicles involved were built approximately between 01/01/04 and 03/06/06. The noise condition if not noticed by the customer may cause eventual encoder sensor wear causing DTC C0327 set in the Transfer Case Control Module (TCCM).

An updated TCCM calibration has been released to apply light pressure to the transfer case clutch pack and reduce the rattle. The calibration was released on 3/18/07 and the title line will read "to correct transfer case rattle at highway speeds and possible DTC C0327". For Rattle only (no current DTC C0327 set), Install the updated calibration and if necessary follow the diagnostics listed below

If the vehicle has a current or history dtc C0327 and can be diagnosed to the encoder sensor, re-flash with the updated calibrations and replace the encoder sensor as necessary.
Important Note: All NV246 transfer cases built 02/25/06 and beyond are manufactured with pressed fit parts to help reduce the rattle. Inspect the ID tag on the transfer case for this build date and verify the tccm has the latest calibration before repairs are initiated.

Thank you fur using Fixya and good luck.

Apr 20, 2010 | 2005 GMC Yukon Xl Denali

1 Answer

The dashboard on my 2003 Yukon Denali won`t light up, the warning lights, the gauges and indicators...nothing is working. The CD player and cigarette lighters all work.


I had this problem on my '03 Yukon. There is an IC or other component on the dash/gauge panel that went bad, but I pulled the gauge cluster and sent it to mrwhizard.com. They replaced some parts, and i paid to have the stepper motors replaced as well, since they would prob go in the very near future. I want to say it cost me about $150-$180 total, including s/h, and had it back in a week or so. It retained my original odometer reading as well, which I was very curious/cautious of.....
Good luck.

Jan 06, 2010 | 2003 GMC Yukon Denali

1 Answer

Fog lights on 2003 gmc yukon dont work


does the fog light indicator warning on the dash come on ??if it does then check the bulb

Dec 19, 2009 | 2003 GMC Yukon

1 Answer

2003 GMC Yukon XL Denali Service Ride control info


leaking suspension air bags is the most common cause, but the system can be tested for trouble codes, I suggest u do so, only the dealer can do this, but guessing about what the problem is can get very expensive very fast.

May 13, 2009 | 2003 GMC Yukon

1 Answer

2003 yukon xl loses all power while driving(SHUTS OFF)


Sounds like your fuel filter need's to be changed. Start with that and good luck.

Apr 06, 2009 | 2003 GMC Yukon XL

1 Answer

2004 GMC Yukon won't start/shift ind. on dash won't illuminate


yes! its possible bad connection or the neutral safety switch is bad.hope this helps !!

Mar 27, 2009 | 2004 GMC Yukon

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