Engine Control Module (ECM): Installation
- Install ECM and ECM ground circuit on backing plate. Being careful to align harness connectors properly. slide connectors on to ECM terminals. Ensure locking levers are firmly in place.
- Align ECM backing plate with slots in fuse/relay box and slide ECM into place. Program frequency code of new ECM into the existing anti-theft system module. See ANTI-THEFT SYSTEMS -- CATERA
article.
- Perform idle learn procedure by turning ignition switch to ON position for 30 seconds with engine off. If further relearn information is necessary, see COMPUTER RELEARN PROCEDURES -- GENERAL MOTORS
article in GENERAL INFORMATION. Install fuse/relay box cover.
Courtesy of GENERAL MOTORS CORP.