Gasoline Engines
WARNING: This page does not describe the selected car, but rather 34 other vehicles, including the 2003 Saturn Vue, 2003 Pontiac Montana, 2003 Pontiac Aztek, 2003 Oldsmobile Silhouette, and 2003 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
DO NOT attempt to adjust idle mixture and idle speed. Both are controlled by Powertrain Control Module (PCM). Incorrect idle speeds are normally caused by dirty throttle plate or vacuum leaks. Ensure all vacuum components are functioning properly.