Reading ABS DTC codes on 94 Sunbird

Does anyone know of a 'cheap' way of retrieving ABS DTC codes on a 94 Bird 2.0 ? I have the GM 3123 code reader which reads the ECM codes fine on my car... but of course the thing doesn't read ABS codes on that particular model.

put key in ignition, get pen and paper ready. find paper clip, streaghten clip out, now bend it in half, make a u out of it. find com link and put 1 end of clip in a and the other end in b . now turn key to on position, and watch servise engine light. it will start to flash code 12 then pause then repeat itself2 more times then it will flash any trouble codes foled by the code 12