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'05 yukon XL 4wd w/RPO code GT5. what gears am i looking at? what t-case is in this thing? NP246? its pushbutton auto and its wet, so im not gonna crawl under it and look for a tag. 4L60E or 4L65E? thanks yall
gt5 looks like 4.10 ratio from everything I see, tranny, i would think it would be 4l80e or 4l85e, since those are the truck trannys, but it may be the 65. O and btw 4 u *le cough* TTT *le cough*