Conditions for Enabling Cruise Control

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

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 12 volts and 16 volts.