[OG68]

The tow haul switch works pretty good. I have noted it functions differently between my '06 Silverado with a 4L60 and my '15 Express van (6L80). Its best feature is the re-calibration of the shift points. But I noticed on my van it when on cruise control, it will also downshift automatically when going down a steep grade. It doesn't do this when driving without a trailer.