Hard 1-2 shift

[79Firebird_99TA]

The TA is shifting hard from 1st to 2nd. I have no codes and it is not in limp mode. This just started last week. Any ideas?

[milleniumz]

ttt

????

[performabuilt]

Broken or stuck accumulator or bad PCS would be my guess or possibly ball came through the plate

[SteveC]

My 01 Z28 shifts very hard from 1st to 2nd, I have a billet 2-4 super servo, and a transgo shift kit #3 washer.

If you have any of these components that could be why the shift is that hard.

SteveC :)

[79Firebird_99TA]

Well the thing is .....it never did until recently. I must say that I like it....but it's different.

[slims00ls1z28]

You'll like it until it fails. Get it checked out.

[Pro Built Automatics]

"My 01 Z28 shifts very hard from 1st to 2nd, I have a billet 2-4 super servo, and a transgo shift kit #3 washer."\
Take out all of the washers, I never use them in any of my Performance buildups. This should make a big difference. If the 2nd feed hole on the separator plate is larger than .093", that can cause hard 1-2 part throttle shifts. Start with taking out the washers, and see what happens.

[SteveC]

"My 01 Z28 shifts very hard from 1st to 2nd, I have a billet 2-4 super servo, and a transgo shift kit #3 washer."\
Take out all of the washers, I never use them in any of my Performance buildups. This should make a big difference. If the 2nd feed hole on the separator plate is larger than .093", that can cause hard 1-2 part throttle shifts. Start with taking out the washers, and see what happens.

I actually like how the vehicle shifts, and have no problems with it. You are obviously far more experienced in the automatic transmission field than I will ever be.

I had the transmission work done by a professional shop (Mike's) in Poway, and I trust that the work was done correctly. It was Mike's idea to swap the stock LS6 servo out for this unit.

Thanks for the tip.

SteveC :)