I have an 03 Yukon XL Denali...it has 115,000 miles and I was wondering if y'all recommend doing the tranny service or not...flush, filter, new fluid, that sort of thing...I do tow 6000 lbs. quite a bit, probably twice a month, sometimes up to 12 hours each way...
Some say if it ain't broke, don't fix it....others follow the vehicle manual...what say y'all?....
Some say if it ain't broke, don't fix it....others follow the vehicle manual...what say y'all?....