Originally Posted by 26679cj5
I did some more research and found out that the 05 and 06 models do need to be vin matched for everything to work correctly, but previous models don't.
Matched to what, exactly? The auto module is contained within the ECM, and I'm not aware of any other computers in the Jeep. Unless there's something in the gauge module, I've never heard of reprogramming those though.
I know 01-04 came with a variety of ECM's due to engine and mapping changes. I think 97-00 are more or less the same, but don't take my word on that.