1997 GMC Sierra 4x4 - 5.7 with 4L60e 133000 miles.
Trans started slipping, no Reverse and 3rd and 4th gears went out. Would not drive past 25-30 miles per hour. Sent to reputable trans shop with 30years experience. They rebuilt the trans with Corvett 2-4 servo, high energy 2-4 bands, pump...