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2007 Yukon XL

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Old March 16th, 2015, 4:05 PM
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Default 2007 Yukon XL
How do I find out if my Yukon is the 1500 or a 2500? I need a rear differential and I believe the two are different.
Thanks for your help.
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Old March 16th, 2015, 7:38 PM
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they are different. a 1500 uses a 6 lug semi-floating axle while the 2500 is full floating and has a 8 lug axle flange....so count the wheel lug nuts. post all the rpo codes starting with G and I tell you what the truck came with from factory.
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Old March 17th, 2015, 1:35 AM
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Thank you...Where can I find the RPO codes?
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Old March 17th, 2015, 7:15 AM
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