Tow haul switch???
So now that I have a 2003 gmc k2500HD extended cab long box to tow our fifth wheel, am wondering how to use tow haul switch, do I activate the whole time towing fifth wheel?
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I will sometime turn it off when I'm ready to accelerate, because it may still think I need the compression. I will do this because it will take high RPMs to shift on its own.
