Roger Tomfohrde
Member
I bought a 1992 2500HD Suburban to pull a trailer for my tractor hobby. I am having trouble with the way the transmission is shifting. It will have normal shifts under moderate acceleration but if you stomp on it or go WOT it will stumble and not shift good, and then when you let off it will shift. Last week we ran down from WI to Nebraska with a small load of furniture and the head wind was causing it to down shift more than normal at almost 75MPH but all it did was lose speed and make noise as the engine sped up. I was reading it could be the TPS, do you guys think changing it out will fix it. There are/were no codes? Or is it the electronic shifting of the trans and I am going to have to repair the trans. Looking for opinions on it. After I bought it I wished I bought the 454 because it doesn't get many miles a year on it right now and this problem makes me to not want to use it. I wish you could buy a stick in something like this truck because I sure don't trust the autos.