Cadillac used many locations for paint codes, making them hard to find, often impossible. GM (parent company of Cadillac) did not standardize the plate location. Usually the code is in the glove box or the spare tire well; otherwise it may be elsewhere. The typical format is 51/WA316N, usually preceded by BC/CC (e.g., BC/CC 51 or BC/CC 316N). There are two codes in one, and a U or L may precede for Upper or Lower. Two-tone examples: BC/CC U316N or BC/CC L316N.