[Redog]

I'm on my 3rd transmission right now.

First one broke because I was launching the car way too hard at the track. I was stall launching at 2250 RPMs, about 1000 RPM higher than the stall on the convertor. I broke a piece of the case off and had a 2" by 6" hole/section in one of the axle shafts. Drove the car for a week after that until all the gear oil leaked out then burnt up the trans driving it to the shop. 65,000 miles on it

The second one was actually was the first one rebuilt/recased Could have been all the orginal clutchs reinstalled in a new case. In December 2012 the trans would slip going into 2nd and overdrive. Got upto 135,000 miles

This current transmission was a used auto parts buy. It was out of a 2003 Pontaic GAGT with only 21,000 miles on it. If you can't afford to go the GT40 transmission route, this is the next best thing with the 3.29 FDR vs the 3.05 in the Alero and GASE. Car now sits with 147,000 miles on it, but is no longer a daily driver.

It's not the HP that breaks things, it's the torque.

Also, pending on the year Alero you have, in 2004 they changed the transmission pump a bit. Rumored to need a different program in the PCM. I couldn't find any soild facts on this, so I just played it safe and went with the newest I could get with little known issues, the 2003. The Axle seals did change in 2001 to a smaller size, but even with that, it's all a straight bolt in and a slight change in the PCM which is no problem if you have HPTuners