Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the engine power is being reduced to protect the engine from damage.
There could be several malfunctions that might cause this message.
Reduced engine power can affect the vehicle's ability to accelerate.
If this message is on, but there is no reduction in performance, proceed to your destination.
The performance may be reduced the next time the vehicle is driven.
The vehicle may be driven at a reduced speed while this message is on, but acceleration and speed may be reduced. Anytime this message stays on, take the vehicle to your dealer for service as soon as possible.
See also:
Navigation
OnStar navigation requires the Directions and Connections service plan.
Push to receive directions or have them sent to the vehicle navigation
screen. Destinations can also be forwarded to the veh ...
Different Size Tires and Wheels
If wheels or tires are installed that are a different size than the original
equipment wheels and tires, vehicle performance, including its braking, ride
and handling characteristics, stability, and ...
If the System Needs Service
If the navigation system needs service and the steps listed here have been followed
but there are still problems, see your dealer for assistance. ...






