Curt offers Trailer Hitch, # C12009, which was designed for the Caprice Sedan and will work with the police model. This is a Class II hitch with a 1-1/4 inch receiver opening.
If you plan on doing any towing, I have included an article that covers the steps to choosing the correct ball mount for your set-up as well as a link to our ball mounts for the 1-1/4 inch hitch. To complete the towing setup, you will just need a hitch ball, # A-80 for 1-7/8 inch or # A-82 for 2 inch, and Pin and... view full answer...