A4 trans slip

[VOODOOII]

I have a 99 SS with 82,000 on it, I just started to notice when in OD that the converter doesn't seen to look up all the time, cruising at 70-75 at 21-2200 RPM the trans seems to slip I can mash the peddle and flash the converter to 5000 RPM if I want to, I down shift into drive and back to OD and it's back to normal, no engine lights or codes!! any Ideas

[JaycenK]

First off trans codes don't always throw check engine lights. you need to scan the trans side of the PCM.
second you can scan it but that is a classic sign of the bands and the clutch pack slipping.
It will slowly spread to 3 and down to 2nd and become undrivable. Time to look at a rebuild or buying a replacement.
Couple of options are to find someone local and have them do a preformance rebuild with high preformance sunshell, clutch pack, bands, servo, solenoids, and what ever else. Another is buy a replacemnet from a company like preformabuilt (who is a sponsor here) with a warrenty and full tech support. They have transmissions that can take up to 1000hp, it all depends on your needs.