[sculver]

Thanks to all of you for some great advice and feedback. I guess towing 4200 lbs. is not that big a deal for this truck. I just wanted to make sure I wasn't going to mess up the tranny driving in "D". I have to admit, even while in D and easing into the gas peddle, the truck would just slowly go faster. Most the time it wouldn't even downshift (when easing into the gas). It would downshift properly when I stepped into it to speed up.

Thanks again for everyone's feedback and sharing your experiences towing.

Regards,

Steve