Transmission not shifting properly
So I swapped out the radiator on my 97
Chevy suburban 5.7 4x4 because it has stop
leak in it so I did the swap and thought
everything was okay the next day hooked a 2
axel trailer loaded down with yard clippings
to it and was a mile away from my house
when it would hit about 35 and kicks out of
gear and rpms rev I get it home and relize
the cooler lines didn't seal and the tranny
fluid leaked out, so I filled it back up and
made sure it sealed but now I can drive it
any advice before I start spending money I
don't have?