Engine Control Module
WARNING: This page is about a different car, the 2003 Saturn LW300, 2003 Saturn LW200, 2003 Saturn L300, and 2003 Saturn L200. However, it is still accessible from the selected car via links, so may be relevant.
After replacing ECM or if program needs to be updated, refer to latest Techline information on ECM reprogramming. After reprogramming, perform PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS (3.0L) .