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
We live not far from you, I generally don't use it on hwy 1 until we reach Hope then it stays on. If the transmission is frequently shifting when off then by all means turn it on. Shifting builds heat.
