General Motors option code
GU4 — 3.08 Axle
GU4 (3.08 Axle): a General Motors factory option code recorded on 2 models across 1977–2002, with installs and price where a source states them.
2 models · 8 model years · 8 sources
Every sourced appearance
| Year | Model | As named that year | Price | Installs |
|---|---|---|---|---|
| 1977 | Buick Riviera | Rear Axle -3.08 Ratio order code (Buick option code) | Unknown | Unknown |
| 1996 | Pontiac Firebird and Trans Am | 3.08 Axle RPO | Unknown | 10,833 Reported |
| 1997 | Pontiac Firebird and Trans Am | 3.08 Axle RPO | Unknown | 10,586 Reported |
| 1998 | Pontiac Firebird and Trans Am | 3.08 Axle RPO | Unknown | 10,631 Reported |
| 1999 | Pontiac Firebird and Trans Am | 3.08 Axle RPO | Unknown | 11,818 Reported |
| 2000 | Pontiac Firebird and Trans Am | 3.08 Axle RPO | Unknown | 1,971 Reported |
| 2001 | Pontiac Firebird and Trans Am | 3.08 Axle RPO | Unknown | 317 Reported |
| 2002 | Pontiac Firebird and Trans Am | 3.08 Axle RPO | Unknown | 2,673 Reported |
Every row traces to the source it links from on that model's own year page; this table only collects them in one place.