General Motors option code
U18
U18: a General Motors factory option code reused for more than one part across 1966–1991 and 3 models — 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.
3 models · 4 model years · 4 sources
Every sourced appearance
| Year | Model | As named that year | Price | Installs |
|---|---|---|---|---|
| 1966 | Chevrolet Chevelle and Malibu SS | Speedometer in Kilometers ~ 2,866 units (GM of Canada export use only, per source) RPO | Unknown | Unknown |
| 1974 | Pontiac Firebird and Trans Am | Instrument Panel - Export (sales code 804) RPO/UPC | Unknown | Unknown |
| 1975 | Pontiac Firebird and Trans Am | Speedometer with Kilometers and Clock (sales code 804) RPO/UPC | $21 | Unknown |
| 1991 | Buick Riviera | Radio - Delco Bose Music System Compact Disc Player, Cassette Tape, AM Stereo/FM Stereo with Dolby order code (Buick option code) | $1,399 | 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.