UPDATED Coast on the uphills accelerate on the downhills
Link to the update Jan 17 2021 I learned something new after 14 years of towing the same trailer. I took my first trip in the new to me 2001 Suburban pulling my 5,600 lb trailer. My older Suburban...
I found a GM publication called the 2001 Chevrolet Suburban Restoration Kit. Unfortunately the way I read it there is only lockup in 4th. So I guess I would have to look into an aftermarket lockup if I wanted to lock up in 3.