To Activate

Push the ON/OFF button. The Cruise Indicator Light in the Electronic Vehicle Information Center (EVIC) will illuminate. To turn the system off, push the ON/OFF button a second time. The Cruise Indicator Light will turn off. The system should be turned off when not in use.

WARNING!
Leaving the Electronic Speed Control system on when not in use is dangerous. You could accidentally set the system or cause it to go faster than you want.
You could lose control and have an accident. Always leave the system OFF when you are not using it.

    See also:

    Five-Speed Automatic Transmission – 5.7L Engine
    The shift lever position display (located in the instrument panel cluster) indicates the transmission gear range. You must press the brake pedal to move the shift lever out of the PARK position ...

    Master Cylinder – Brake Fluid Level Check
    Check the fluid level in the master cylinder immediately if the brake system warning light indicates system failure. Check the fluid level in the master cylinder when performing underhood service ...

    Onboard Diagnostic System — OBD II
    Your vehicle is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions, engine, and automatic transmission control systems. ...