Dougiefresh85

I have a 1999 pontiac trans am and I'm having a delayed shift only when I press on accelerater harder off the line but when I'm going in low rpm it shift with no delay or anything it happened 2 days before our fuel pump went out and so we changed it along with the fuel filter. Also the injectors and did a tune up with the tcs it only has about 20,000 on the tranny after it was rebuilt we also have a 4:10 rear end in it.