Idle Speed & Mixture
WARNING: This page is about a different car, the 2003 Cadillac Seville, 2003 Cadillac DeVille, and 2003 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Idle mixture is controlled by Powertrain Control Module (PCM). Idle speed is preset by manufacturer and is not adjustable.