The Pontiac G6 offered two main transmission types during its production run (2005–2010): a four‑speed automatic and a five‑speed manual, with the automatic being the more common choice on V6 models and the manual available on certain four‑cylinder trims.
Overview of the transmission options
The following categories reflect how the G6 could be equipped, depending on engine and model year. Transmission availability varied by market and year, so check the build sheet for a specific car.
- 2.4-liter four-cylinder (Ecotec): typically paired with a five-speed manual transmission, or a four-speed automatic on other configurations.
- 3.5-liter V6: commonly paired with a four-speed automatic transmission; manual transmissions were not widely offered with this engine in most markets.
- Notes on variants: Some early 2005–2006 configurations offered a manual option with the 2.4L engine; later models predominantly used the four-speed automatic across the G6 lineup.
Transmission choices did not include modern multi‑speed automatics beyond the era of the G6, reflecting its mid-2000s design. Always verify the exact configuration for a specific vehicle using the VIN or window sticker.
How to verify for a specific car
For buyers or owners, the vehicle identification number (VIN) and the original window sticker (Monroney) will list the exact transmission. The G6's service manuals and parts catalogs also show the applicable transmission models per engine and trim level.
VIN and window sticker check
Inspect the VIN (often located on the driver’s door jamb or dashboard) and the Monroney sticker to confirm the engine and transmission. Repair manuals and dealer documents can also confirm the exact transmission type for a given vehicle.
Summary
The Pontiac G6 used two primary transmissions: a four-speed automatic and a five-speed manual. The 2.4-liter four-cylinder offered the manual option (and also a four-speed auto in some trims), while the 3.5-liter V6 commonly used a four-speed automatic. Across its 2005–2010 production window, the G6 did not include newer multi-speed automatics, keeping to relatively traditional GM transmissions of its era.