Question about 2003 GMC Yukon XL

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WHAT PARTS DO I NEED TO TUNE UP MY 2003 GMC YUKON XL

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You don have to do much to that gmc as long the coil is good, just replace all 8 spark plugs, air filter and basic oil and filter change; use good brands of oil, such as castro, mobile, shells ect. if your the original owner and have high miles and never have replace thermostat, I would go ahead and have it done, I would not wait until it fail and over heat on you. if you have done lot of pulling with your vehicle and have 75-100k mile, have your transmission flush with new filter, it will give the tanny life last a bit longer.

Posted on Sep 25, 2009

  • suber1 Nov 02, 2010

    On this tune-up what kind of brand spark plugs should I get I want my yukon to run great money is not a problem I want the best. thank you. p. s. if I put in thia new spark plug that has three prongs will it run hotter and is it good for my yukon ?

  • robert martin
    robert martin Feb 23, 2014

    a/c delco everything

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Spark plugs,air filter,cabin air filter(if applicable),pcv valve(if equipped),ignition wires,fuel filter

Posted on Sep 25, 2009

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Good job Mr. MIller. ? Unless your SES LIGHT IS ON. .I ALWAYS A BOTTLE OF LUCAS FUEL INJECTION cleaner in too...and with every 5k oil change.

Posted on Mar 21, 2013

Have you ever worked on your own vehicles before. There hasn't been a tune up in automotive terms in 20 years. You still have spark plugs,filters etc After that you will need a lot of expensive diagnostic equipment and knowledge to continue.

Posted on Sep 25, 2009

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