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?
Forum Discussion
Tow haul has nothing to do with compression. It is strictly a tranny adjustment. Use it. Let the engine wind up a little bit. If it cuts your mpg by a tenth of a mile, how many tenths do you have to run to replace a torque converter? If tenths mean that much to you, you should also only use your a/c in cool weather and always, always keep your windows rolled up.
