David wrote: > > Where do I find a list of the ECM numbers for the 1990's era GM ECMs? > > I have one with 16229931 on the case and have not been able to find what it > will interchange into. > > Thanks in advance. > > David It should say "service no." in front of the part no. GM dealer can give you a cross reference, and an application if ya ask nicely. Shannen