Quote Originally Posted by Skillet View Post
Are these transmissions in these cars capable of throwing a code ? Like could I take it to GM and see if its throwing a code for converter slippage?
Yeah, would do you good to get it scanned. A little part of me thinks you have a vac leak. When the rubber "T" off the LIM nipple under the supercharger snout rots off, you see grabbing/slipping around 60mph. Should throw a "bank 1 lean" code, if I remember correctly. You seeing movement on the boost gauge in the DIC?