2-3 shift at part throttle

[Turboaddict]

sometimes when i'm going at part throttle the tranny feels at if it shifts twice. This is only during the 2-3 shift. But it doesn't happen all the time. Whats causing the tranny to shift as if it shifting twice during the 2-3 shift?

 

[MeanBuicks]

Have you ruled out the possibility that it could be the TCC applying? If not, temporarily disconnect it (or lightly ride the brake pedal) to keep it off and see.

 

[Turboaddict]

Can the TCC do that? Well I'll go try what you said and post back

 

[Turboaddict]

ok went for a test and with the brakes lightly applied the same thing happend. what else could it be?

 

[MeanBuicks]

This could be tricky. Could you provide a brief background on your transmission's history? i.e. all stock?, shift kit?, rebuilt?, modifications?, miles on unit?, etc.

 

[Turboaddict]

car has 51,000 miles now. I assume its still the stock original tranny with a shift kit(Dynotech brand). I don't think there are any mods to it.