I had a shop put a transgo shift ki and vette servo and now my OD is slipping it cathes a little but any thing over 1500 rpms it just revs. What could be wrong.

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89 T/A GTA 350 TPI free mods and all stock
15.21 @ 89.7

If it was just installed by a shop...TAKE IT BACK!

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1989 Firebird
2.8 v6, t5 swapped in

Ram Hi-po clutch, Cold Air, 1.6 rockers,Lakewood LCA's, Lakewood Lift bars, Wonder Bar, 3" y-pipe, Random Tech Cat, 3" I-pipe, Flowmasters, MSd 6a, MSD Coil (Fireball in future) Accel 8.8 wires, MSD Ignition Module, Auto Meter Gauges (Water, Clock (needed one) Fuel Pressure, and 5" monster tach)TB Bypass, 4th Gen Seats

Coming for my v6:
Panhard Bar, 4thgen front seats, Nitrous, Line Lock, and Ram Air 2 hood

"I'd rather run last in a full out race, than to not have run at all"

I agree, take it back. This is why it costs more to have a quality shop do the work- they have to stand behind their work!

The most likely reason this is happening when it didn't BEFORE they worked on it is that they damaged the O/D Servo teflon ring. This is the piston that goes into the Servo cover. Until they warranty their work (or buy you a new tranny), do not drive in the O/D position but instead use the D position.

Thanks i'll take it back and get them to fix there work.

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89 T/A GTA 350 TPI free mods and all stock
15.21 @ 89.7