Big J,
The horsepower & torque curves intersect right @ 2500rpm, which while towing in 3rd gear, gives me around 58mph. This is where I feel I'm getting the most power without wasting too much fuel.
I called Chevy and they confirmed that even thou the manual says that it's ok to tow my truck in overdrive, that their dealer network has confirmed that 3rd gear is the best for long term towing.
Let me know when you're ready to trade yours in
.
John