idk, my brother (tech guy, built a HO 327 and ran it on his garage floor) said it is probally a switch as that sometimes happens to these cars. BUT if i do wind up replacing the trans, should i just go for the tripleedge tranny, i think that is built for the supercharged engine as well. so it should be able to handle a N/A engine fairly easy. Also, in the future, would this bolt in? as it is the same engine..3.8l L67 Series II Supercharged Engine w/ 4t65e-hd 110k | eBay..Honestly I would buy a gtp but insurance wants arm and leg for it =/ for some reason they rate it up at almost as much as a trans-am would cost. Just a thought, but if i could drive a "GTP" and pay for the GT insurance rate i would be pretty happy. ;] Jeeze look at my ramble ^^ Ha.