|Originally posted by Formula88:|
But yes, the OBDII PCM can be made to work. You have to make the PCM think the transmission is in either Neutral or Drive at the appropriate times. DarthFiero has come up with ways to do this for a 3800SC. I don't know if it's the same for the 3400, though.
The information I have about bypassing the trans controls in the OBDII PCM's is pretty universal across GM. Of course there will be exceptions, but for the most part that info should help you work around the stock PCM programming obsticle. However, I need to make one thing clear. The information I have up on my site is merely a suggestion. You don't have to do everything that I spell out in order for the car to run and drive. Rather, the information I have up is intended to make your PCM more compatible with the combo you are using as well as improve drivability and functionallity of the stock PCM programming. Ultimately, a PCM reprogramming would be the best option but it can be very expensive and depending on what company you have do the job, they may not do everything you want done or may not be able to fix every problem you have.
In my opinion, my solution to the 3400 5-speed problem would be to do away with the OBDII PCM altogether and wire in an early 90's Beretta 3.1 V6 ECM and then just get an inexpensive custom chip burned. However, if you have emissions testing in your area, this may not be an option your local testing stations could live with.
power corrupts. absolute power corrupts absolutely.
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