Info - Cruise Control Operation - Increasing Set Speed. Pontiac GMX281 2004

For 1990-2009 cars

# Info - Cruise Control Operation - Increasing Set Speed

Subject: | Cruise Control Operation -- Increasing Set Speed

Models: | 2004-2005 Passenger Cars and Light Duty Trucks

| 2004-2005 HUMMER H2

This bulletin is being issued to provide dealers with additional information on the increasing set speed function during cruise control operation. The vehicle's Owner's Manual states that the accelerator pedal may be used to increase speed and then establish a new set speed by engaging the set button again. This is true, but the increased speed must be greater than the minimum speed calibrated in the PCM. Minimum speed calibrations vary for each model, depending on which module manufacturer the vehicle is equipped with.

If a customer comes in with a comment that the set button is intermittently inoperative when using it to establish a new set speed, this may be due to the speed increase not being enough. To verify system operation, compare the increased set speed function to another like vehicle. If the operation is similar, then no further work should be performed. If the vehicle does have a condition, then follow diagnostics in Service Information for cruise control set speed operation. The tap up feature for cruise control still will increase vehicle set speed.