OEM 2006 Cadillac STS Engine Control Module

2006 Cadillac STS Parts Questions & Experts Answers

• Q: How to replace the Engine Control Module (ECM) on 2006 Cadillac STS?

  A: Proper installation of a new ecm requires turning off the ignition to safeguard against electric damage affecting the connectors and power connections including the Battery Cable and control module fuse. All contact between the control module metal case and battery voltage must be avoided as well as touching soldered components and connector pins since electrostatic discharge poses a threat to device damage. When servicing the control module testers should be cleaned of debris and gasket installation needs verification for contaminant protection. If you do not program engine oil life or automatic transmission fluid data into the new module through a scan tool then the replacement module will automatically reset to 100 percent. This action compels an oil change at 5000 km (3,000 mi) alongside a transmission fluid change at 83000 km (50,000 mi). Remove the battery negative cable first while lifting and supporting the vehicle and then removing the front air deflector. The ecm electrical connectors need disconnection before removing its mounting nuts and extracting the ecm. Install new ecm by positioning it in the vehicle then tightly securing the mounting nuts to 8 n.m (71 lb in) before reattaching electrical connectors and reinstalling the front air deflector and lowering the vehicle and reconnecting the battery negative cable. Programming of the ecm completes the installation process to achieve proper system functioning.