Originally Posted by daddyfarlessa
I have a 2003 6cyl w/ext cab (2 wheel drive) 63K miles.
I'm looking to tow a travel trailer (weight - 3998 lbs.)
Is it recommended to add a transmission cooler to the truck ?
One more question:
What is the 'ETC' switch on the dashboard for ?
I'm guessing it's an auto since you're asking about a transmission cooler. I'd suggest a large one with an integrated fan if you're going anywhere mountainous. I towed a travel trailer of that weight with my '13 and the transmission temps were pretty high.
Oil cooler wouldn't hurt either.
I dont have an etc button, but I'm guessing it's traction control.