Thank you so much for your comments guys.
Yes I know I am driving a 19year old truck I live on a budget and was brought up to drive it till the wheels fall off but maintain it, however a transmission for the 4Runner would exceed the value of the 4Runner and not sure it would solve the problem.
I really want a truck not another SUV like my 4Runner. The trailer weighs 2100 lbs single axle but it is tall. It sleeps 4 has a bathroom and kitchen so I guess you would call it small camper trailer it fits in a normal parking space. Not sure what the tow rate of the 4Runner is. I installed the trailer hitch myself it was a direct fit that I got off a 1993 4runner in a salvage yard. My Dad and I wired the plug and we could install a trailer brake on the tow vehicle because the trailer has one already in place. The Boat is a small 12’ Lund v hull and weighs less than the camper trailer.
I was looking at the Chevy Colorado I really like the style (girl thing) but is it too narrow to tow the camper trailer ie wind resistance? My second choice would be Silverado Z71 but here in Colorado they are very expensive even for the older ones. I can not afford a new truck 10k is the top of my budget. I do need 4wd because I hunt deer and Elk it would be hard to get either in the 4Runner so I bought a rack that fits behind the tailgate, also reason why I would like a truck. I can drive a stick shift but I have never driven a diesel. I camped in tent last year and froze my you know what off that is why I bought the trailer it was delivered to my house and that is when I discovered the 4Runner will tow but struggles.
The ATC light was coming on prior to towing anything and it was also sluggish trying to climb the pass empty it is great once it gets there but it is the getting there that is the problem. Maybe one of the mechanics here can offer suggestion?
So consensus is Silverado, Ram or Tundra, which engine? What year spread although 1996-2005 is what I am looking at. Or does the additional information give you guys any other ideas?
Once again thanks for you comments