Cruise Control Inhibited

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The PCM inhibits the cruise control operation when any of the following conditions exist:

A cruise control system related DTC has been set.
The vehicle speed is less than 40 km/h (25 mph).
The vehicle is in PARK, REVERSE, NEUTRAL, or 1st gear.
The engine RPM low.
The engine RPM is high.
The vehicle speed is too high.
The system voltage is not between 6 volts and 16 volts.
The anti-lock brake system (ABS)/traction control system (TCS) is active for more than 2 seconds.