See also:

Important safety notes
WARNING Do not turn off the engine before the vehicle has come to a complete stop. With the engine not running, there is no power assistance for the brake and steering systems. In this case ...

Important safety notes
WARNING It is dangerous to shift the automatic transmission out of parking position P or neutral position N if the engine speed is higher than idle speed. If your foot is not firmly on the ...

Under the Hood
Depending on the model, there are two engine options that can be teamed with a five- or seven-speed automatic transmission. G550's V-8 produces 382 horsepower and 391 pounds-feet of torque and tea ...