We're moving in July to Crestone Co. for a while . Thinking about towing our second truck, a Chevy 1500 short cab short bed (loaded with a few things) but I'm worried about straining the transmission on the Dodge. With the 1030 and supplies the GVW will be 12000 lbs on the Dodge ;100lbs over max. I don't have a transmission temp guage but was thinking of towing on the flats and driving the chevy in the mountains to take the strain off the Dodge. And advise or thoughts would be appreciated.