Extracting OBD-1 Codes??
Need some help fellas, can someone explain to me how to extract codes from an OBD-1 sys. (94 Bonneville SSEi) I have a key for the older "GM" type computers that just jumped across the diagnostic terminal, to ground,...then count the flashes. I also purchased a handheld OBD-2 unit for my other vehicles, and I thought this Bonne was OBD-2 Compliant, for the connectors looked the same??? But it'* not The emissions label indicates it'* a Obd-1 sys. I have a Cadillac that goes into Diagnostic by pressing the "Off" and "Warmer", evidently this doesnt do it either. Could someone please explain to me if you can manually extract the codes, or do I need to buy another scan tool? Thanks in advance.