[sierrap615]

heres another little tid-bit i learned today, my 95 regal 3.8L has OBD-2, rear O2, but a 12 pin connector. I hooked up a scantool and got a 3 digit DTC, as you know, OBD1 codes are 2 digit and OBD2 codes are one letter + 4 digits. the code was 670, i looked on ALLDATA and matched it to P1670.