If I remove the battery on a 2004 ssr will it mess up the computer or anything else on the vehicle
No, you mess anything up. Only thing is you might lose the radio station presets.
Remove the negative first, then the positive cable. When installing the new, install the positive cable first, then the negative.
radio presets will need to be reset.
Looking for a Used SSR in your area?
CarGurus has 294 nationwide SSR listings starting at $12,999.
Search Chevrolet SSR Questions
Chevrolet SSR Experts
Related Models For Sale
Used Cars For Sale