General Motors option code
U05 — Dual horns
U05 (Dual horns): a General Motors factory option code recorded on 5 models across 1968–1979, with installs and price where a source states them.
5 models · 11 model years · 4 sources
Every sourced appearance
| Year | Model | As named that year | Price | Installs |
|---|---|---|---|---|
| 1968 | Chevrolet Chevy II and Nova | Dual horns RPO | $5.30 | Unknown |
| 1970 | Pontiac Firebird and Trans Am | Dual Horns (sales code 674) RPO/UPC | $4.21 | Unknown |
| 1971 | Pontiac Firebird and Trans Am | Dual Horns (sales code 681) RPO/UPC | $4.21 | Unknown |
| 1972 | Pontiac Firebird and Trans Am | Dual Horns (sales code 681) RPO/UPC | $4 | Unknown |
| 1973 | Chevrolet Chevy II and Nova | Dual horns RPO | $4 | Unknown |
| 1973 | Pontiac Firebird and Trans Am | Dual Horns (sales code 681) RPO/UPC | $4 | Unknown |
| 1974 | Chevrolet Chevelle and Malibu SS | Dual horns RPO | $4 | Unknown |
| 1974 | Chevrolet Chevy II and Nova | Dual horns RPO | $4 | Unknown |
| 1974 | Chevrolet El Camino SS | Dual horns RPO | $4 | Unknown |
| 1975 | Chevrolet Chevelle and Malibu SS | Dual horns (standard with Z03) RPO | $4 | Unknown |
| 1975 | Chevrolet Chevy II and Nova | Dual horns RPO | $4 | Unknown |
| 1976 | Chevrolet Chevy II and Nova | Dual horns RPO | $6 | Unknown |
| 1976 | Chevrolet El Camino SS | Dual horns RPO | $6 | Unknown |
| 1977 | Chevrolet Chevy II and Nova | Dual horns RPO | $6 | Unknown |
| 1977 | Chevrolet El Camino SS | Dual horns RPO | $6 | Unknown |
| 1977 | Pontiac Tempest and LeMans | Dual horns RPO | Unknown | Unknown |
| 1978 | Chevrolet Chevy II and Nova | Dual horns RPO | $7 | Unknown |
| 1979 | Chevrolet Chevy II and Nova | Dual horns RPO | $9 | 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.