It's a zombie buddy cop horror comedy starring Joe Piscopo as Doug Bigelow (get it?) and Treat Williams as Roger Mortis (yes....) I'm surprised this hasn't been done already it is glorious and completely bat-shit crazy.
Here is the wiki synopsis -
Dead Heat is a 1988 movie about an LAPD police officer, Roger Mortis (Treat Williams), killed while attempting to arrest zombies who have been reanimated by the head of Dante Laboratories in order to carry out violent armed robberies. Joe Piscopo co-stars.
Enjoy