General Motors option code
CO4
CO4: a General Motors factory option code reused for more than one part across 1977–1981 and 1 model — see the table for what it named each year, with installs and price where a source states them.
General Motors reused this code for more than one part over the years — read the "as named that year" column for what it meant on each row rather than assuming one meaning throughout.
1 model · 4 model years · 4 sources
Every sourced appearance
| Year | Model | As named that year | Price | Installs |
|---|---|---|---|---|
| 1977 | Buick Riviera | Heavily Padded Landau Vinyl Top with Coach Lights order code (Buick option code) | $244 | Unknown |
| 1979 | Buick Riviera | Heavily Padded Landau Vinyl Top with Coach Lights (N/A S-Type) order code (Buick option code) | $285 | Unknown |
| 1980 | Buick Riviera | Landau Top, Heavily Padded, includes coach lamps order code (Buick option code) | $298 | Unknown |
| 1981 | Buick Riviera | Heavily Padded Landau Top with Coach Lights order code (Buick option code) | $273 | Unknown |
Every row traces to the source it links from on that model's own year page; this table only collects them in one place.