Quote Originally Posted by EagleMark View Post
the one you want is B5 to Pin M of ALDL port. Unless you have a Vette disconnect the other, then connect.
it won't matter which is used.... they're both the same circuit. i imagine GM did it this way for redundancy in case one wire gets dropped, then it will still be 100% functional.

Quote Originally Posted by dave w View Post
I just did a search on ebay ( http://www.ebay.com/sch/i.html?_saca...228708&_sop=15 ) for the 1227808 ECM, found 8 listings (reman A1 Cardone) with prices from $90 ~ $155. Several months ago I looked for new Quad 4 Memcals and they were also available ( http://www.ebay.com/itm/ACDELCO-OE-S...5fb60d&vxp=mtr )

dave w
interesting. considering Q4 W-bodies may have had even lower production numbers than the C4 ZR1(i don't have the production numbers handy), i'm kind of amazed anything specific to them is still available.