I have a 1996 chevy z71 truck with a 4l60e transmission the transmission is in limp home mode it seems to work fine when i first drive it but when it warms up it takes off in 3rd gear i check the fluid fuses under the hood hook a scaner to it no transmission codes i can manuly shift throught all...
i have changed spark plugs wires rotor and cap crank shaft sensor cam shaft sensor checked all pistons for compression all pistons good 140lbs or higher did a fuel pressure test i have 60lbs of pressure sprayed starting fluid all around the intake for a leak no leak has new map sensor the check...