My 95 Pontiac Grand Prixs They are OBD I systems with ALDL connectors with only one pin. Standard code readers won't work. We need to know which scanners or readers work with these cars. But I only have one post, The B post There is no A post. My understanding is that it is an OBD 1.5 system with an ALDL connector. The standard paperclip trick will not work. How can I pull up codes.