4l60e 2000 gmc
Won't go onto 3rd . shifts 1 to2nd . going into 3rd it
freewheels . changed tcc solenoids both . it has a
tow button. I can push it on after sighting into 3rd
when it is freewheeling and it will go back into 2nd.
I push it again and it will freewheel
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