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OBD1.5 to OBD2..what needs to be done?.
I have a 1995 Grand Am with a 3100 M engine that needs some work.I would like to swap that out with a newer OBD2 system 3.4 out of a 1999 or 2000 or even a 3.5 or bigger out of a newer vehicle.I know the motor mounting will have to be made to work with the newer engine but will I need the entire engine harness,ECM and dash harness with ALDL?.The link to the engine swap info doesn't work on here.