The 3.5 V-6 is backed by the Hydra-Matic 4T45-E electronically controlled four-speed automatic transmission. For drivers who enjoy more control of the engine’s power bands, the G6’s automatic transmission also is equipped with a manual shift mode. The feature allows the driver to manually select the gears without the need for a clutch or just leave it in the fully automatic mode. With the manual-shift mode, sophisticated programming allows much more driver control than other manual-control automatics. Gear changes are quick and crisp; and although the system’s programming won’t allow the engine to rev into a damaging rpm zone, it will not shift for the driver when in manual mode.
With its wheels at the corners and long wheelbase, Pontiac G6 significantly raises the bar for responsive handling in the midsize segment. The 112.3-inch wheelbase provides a smooth ride and enables more aggressive and responsive suspension tuning. The front suspension consists of a MacPherson strut design with aluminum control arms and a direct acting stabilizer bar. The suspension is mounted to a U-shaped hydroformed chassis cradle that is isolated from the chassis with four specially tuned rubber mounts.
The mounts reduce noise, vibration and harshness felt in the vehicle for a smoother, quieter ride. In the rear, a four-link independent suspension design uses twin-tube shocks and, like the front suspension, a direct acting stabilizer bar. Attached to the shocks, in addition to the chassis, direct acting stabilizer bars respond more quickly to suspension loads and driver input, as well as reduce body roll.
Sixteen-inch wheels are standard on the G6, with 17-inch wheels standard on GT.
Anti-lock brakes are standard on G6 GT models. Enhanced Traction System full-function traction control and Vehicle Dynamic Control System, which uses a yaw sensor and other features to keep the vehicle under control in the most challenging driving conditions, also are available.
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