Most of these you might have seen, but when I was looking at the PCM a while back I found some links that may or may not be useful. Maybe a couple will make the link page.
http://www.techedge.com.au/vehicle/aldl8192/8192hw.htm
http://www.aeb.com/avt-inc/tech_info.htm
http://www.i-r.net/chipdir/f/eprom.htm (not sure if they have the chip we need)
http://www.dearborn.co.uk/welcome_to...5Cproducts.htm
http://www.dgtech.com/
http://members.iinet.net.au/~metapro...I/DDL/DDL.html
http://www.diy-efi.org/diy_efi/parts_suppliers.html
http://www.obd2.com/catalog/viewcat.htm
http://www.andywhittaker.com/ecu/ecu_software.htm
http://www.elmelectronics.com/index.html
http://home.quicknet.com.au/andrewm/eprom1/index.html
http://www.ashware.com/Products_Page...tform68332.htm
http://www.multiplex-engineering.com/ (another OBDII interface)
http://www.thefreecountry.com/develo...ingtools.shtml
http://calid.gm.com/vci/ (latest GM code revision # for your VIN #)
http://transaq.ce.gatech.edu/guensle.../diary9904.pdf
http://www.msu.edu/~guentche/guentch...I/details.html (beta OBDII program)
http://www.aft-werdohl.de/BIOlinK_E.pdf
http://www.coe.montana.edu/ee/cady/misclink.htm
http://www.mobiledatasystems.com/index.html
http://www.nwlink.com/~bhouse/MRMHardware.htm (68332 info)
http://www.obdiicsu.com/
http://www.akmcables.com/obdii.htm
http://www.comlite.com/comlab32.html
http://www.lvr.com/serport.htm
http://www.geocities.com/MotorCity/S...g/do_tune.html
http://home.earthlink.net/~lyttlec/r...#APPENDIXA.6.1
http://www2.arnes.si/~uljfer3/elect/doc/primer.htm
http://www.blacky.co.nz/free/index.htm
http://www.akmcables.com/obdii.htm
Thats about it....
Hopefully a few of these will be useful to someone.
DEE