Overdrive Operation

The automatic transmission includes an electronically controlled Overdrive (fourth and fifth gears). The transmission will automatically shift into the Overdrive gear if the following conditions are present:
• the shift lever is in the DRIVE position,
• the transmission fluid has reached an adequate temperature,
• the engine coolant has reached an adequate temperature,
• vehicle speed is sufficiently high,
• the driver is not heavily pressing the accelerator, and
• the TOW/HAUL switch has not been activated.

    See also:

    Materials Added To Engine Oil
    Do not add any supplemental additives, other than leak detection dyes, to your engine oil. Engine oil is an engineered product and its performance may be impaired by supplemental additives. ...

    Sentry Key
    The Sentry Key Immobilizer System prevents unauthorized vehicle operation by disabling the engine. The system does not need to be armed or activated. Operation is automatic, regardless of whether ...

    Cooling System
    To reduce potential for engine and transmission overheating, take the following actions: − Highway Driving Reduce speed. − Air Conditioning Turn off temporarily. ...