Forum Discussion
rrev
Mar 12, 2016Explorer
Inside your glove box door their should be a label that has a bunch of codes. These are all of the options/features on your truck. GU4 is the 3.08 axle, GU6 is the 3.42 axle. Look for the K5L code to see if you have the HD cooling package (this requires the 3.42)
Do what this says. This is going to tell you what you need. But I think you are way over thinking this. I pulled heavier with an 02 Yukon XL.
Do what this says. This is going to tell you what you need. But I think you are way over thinking this. I pulled heavier with an 02 Yukon XL.
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