Question about 2003 GMC Yukon XL

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My 2003 GMC Yukon slt has lots of problems as you know,but this time it is turning over very slow like the starter is dragging(but is not)it turns over like it isn't going to start,then it does crank but it will only idel slowly.It will not excelerate like its not getting gas,My check ingine light comes on but can't figure what is wrong.Thought about Catilatic Converter? but swould like to know what it really is before taking it to shop.

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Hi GENO, if you can take your car to the neatest auto parts store they will check it for you for free, but it will be nice to buy the parts for a thank you. BEST OF LUCK

Posted on Oct 10, 2013

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Posted on Jan 02, 2017

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2003 GMC yukon XL has power but wont turn over to start all electronics working but it will not start


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Factory security alarm on my 2003 gmc yukon stopped working. What should I do?


This may be related to the antitheft system The system is known for turning off the starter and/or injectors when it fails. Is there a light on the dash that says SECURITY? This is a common problem worth looking into. http://www.diy-gm-security.com/ &

May 05, 2015 | 2003 GMC Yukon

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My gmc yukon 2000 slt rear ac blows hot air when i have ac . on and the front works fine .


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A lot of problems


The problem is electrical, there is a sensor that is finding a problem somewhere. Its telling you this information when your kilometer screen shows you the errors. I suggest looking for a loose battery connections both battery side and starter side, look at all electrical connections that are visible. Check all your fuses check for vacuum leaks.

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1 Answer

I have a dead short in my 2003 GMC Yukon SLT is there a easy way to find the dead short?


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1 Answer

I AM HAVE INSTALL TURN SIGNALS IN MY MIRRORS ON MY TRUCK I JUST NOT KNOW WHICH WIRE TO TAP INTO TO MAKE THEM WORK I HAVE A 07 GMC YUKON SLT XL 1500


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1 Answer

Have a 2003 yukon turn the key and sometimes it will start and other times its got a clicking sound. so i just keep turning the key back and fourth and it will start. could it be the starter


Yes it could. The start solenoid has a large washer that has to make contact to flow the current the starter needs. Over time it gets covered with carbon and burn marks. These will eventually get so bad that they dont conduct the current necessary to make the starter crank. Technically you can just replace the solenoid but most shops wont and will insist that it is better to replace the whole starter. In many cases the labor will be the same and slightly more perhaps to repair the solenoid then to just replace the starter.
As you can see though either will fix the problem.

Apr 21, 2010 | 2003 GMC Yukon Denali

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