SweetLou wrote:
Why couldn't you manually shift the Sub when towing?
The manual control option on Chevrolets/GMC's does not allow you to "FORCE" upshift.
If you are completely stopped, and have it in manual selection mode and 6th gear, you are going to run through the gears.
I have driven other cars where it gives you the exact gear you select, but in GM's its a 'ceiling'/downshift option, not a forced selection/upshift option.
Actually, in perfectly flat areas, I will often turn off tow haul mode and THEN get fifth gear more (I watch trans temperature for safety). Of course that will bring out the wrath of the tow haul police, for it is written- when towing a big TT, you need to be in tow-haul mode.