Originally Posted by ses800rmk
I have a 700r4 in a jeep that has the same problem. No upshift out of first gear. Everything seems to check out. Didn't know the tv cable affected the first shift.
the TV cable minimum adjustment and maximum pull must be correct for proper shifts.
If minimum setting is too loose, the trans may go into a ''fail safe'' mode GM designed in. The trans will then shift late as if the throttle is WOT