The Telluride doesn’t have a tow mode that I’m aware of but based on recommendations I’ve read on this forum I would suggest the following when towing as sort of a “manual tow mode”:
- Smart Mode for Drive Mode
- Avoid using Adaptive Cruise Control
- Disable the Auto Start-Stop
- Disable the Rear Parking sensor
- Use the Auto Hold?
Maybe others have better suggestions. All this stuff is controlled right below the shifter except for Cruise Control which is on the steering wheel.
This forum discussion is a little old so be aware that the correct vehicle tongue weight is 500lbs not the originally advertised 351.
For your Curt Echo questions, I highly recommend
eTrailer.com. They have some great pre and post sales support. If you go the Curt Echo route you have to replace the Telluride’s 4-pin with a 7-pin socket (often called an RV upgrade kit because most RVs are heavy enough to require electric brakes). The selling feature for the Curt Echo is that you don’t actually need all 7 pins. You just use the 4-pin connector that now plugs it into the 7pin socket and also run a wire to a
40amp inline circuit breaker to the positive of the battery. The most complicated splicing is not needed. The Curt Echo gets power from the battery and uses its own technology to decide when to send power to the trailer brakes based on a triple-axis accelerometer to detect vehicle speed without tapping into more wires. You also use a smartphone if you want to monitor or adjust it after initial setup, but you don’t have to.