Fuel Economy Mode
The vehicle may have a fuel economy mode. When engaged, fuel economy mode can improve the vehicle's fuel economy.
Pressing the eco button by the shift lever will engage fuel economy mode. When activated, the eco light in the instrument cluster will come on. See Fuel Economy Light. Pressing the button a second time will turn fuel economy mode off.
When fuel economy mode is on:
- The transmission will upshift sooner, and downshift later.
- The torque converter will lock up sooner, and stay on longer.
- The gas pedal will be less sensitive.
- The vehicle's computers will more aggressively shut off fuel to the engine
under deceleration.
- The engine operates at lower rpm's in fuel economy mode, which can increase
noise and vibration. This is normal.
See also:
Total Weight on the Vehicle's Tires
Be sure the vehicle's tires are inflated to the upper limit for cold tires.
These numbers can be found on the Certification label or see Vehicle Load
Limits for more information. Make sure not to go ...
Engine Oil Life System
The engine oil life system calculates engine oil life based on vehicle use and
displays a DIC message when it is necessary to change the engine oil and filter.
The oil life system should be reset ...
Reactivation for Subsequent
Owners
Push and follow the prompts to
speak to an Advisor as soon as
possible after acquiring the vehicle.
The Advisor will update vehicle
records and will explain the OnStar
service offers and opt ...