General Motors option code
T63 — Headlamp on Indicator
T63 (Headlamp on Indicator): a General Motors factory option code recorded on 2 models across 1975–1979, with installs and price where a source states them.
2 models · 3 model years · 3 sources
Every sourced appearance
| Year | Model | As named that year | Price | Installs |
|---|---|---|---|---|
| 1975 | Pontiac Firebird and Trans Am | Headlamp Warning Buzzer (sales code 444) RPO/UPC | $6 | Unknown |
| 1977 | Buick Riviera | Headlamp on Indicator order code (Buick option code) | $7 | Unknown |
| 1979 | Buick Riviera | Headlamp on Indicator order code (Buick option code) | $11 | 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.