Conditions for Enabling Cruise Control

WARNING: This page is about a different car, the 2007 Cadillac XLR. However, it is still accessible from the selected car via links, so may be relevant.

The CRUISE NOT READY message is not illuminated in the DIC.
The vehicle speed is greater than 40 km/h (25 mph).
The vehicle is not in PARK, REVERSE, NEUTRAL or 1st gear.
The system voltage is within 9.2 volts and 16 volts.
The park brake is released.
The forward looking sensor (FLS) is radiating and the adaptive cruise module (ACM) has identified acceptable stationary or moving objects.