OEM Cadillac XLR Engine Control Module

Cadillac XLR Engine Control Module Parts Questions & Experts Answers

• PCM
  12678511
  Q: How to replace the Engine Control Module (ECM) on Cadillac XLR?

  A: The first step to replace the Engine Control Module (ECM) involves switching off ignition power because it protects the internal components of both the power connections and control module connectors. It is essential to avoid placing battery voltage on the control module's metal case since this could cause damage along with refraining from touching pins or soldered components to protect from electrostatic discharge. A correct inspection of gaskets and an effective connector surface cleaning must be completed before service to block contaminant access. Note down current engine oil and automatic transmission fluid lifespans because the replacement module needs this information to function otherwise the engine will need immediate oil change at 5000 km (3,000 mi) based on 100% default life and transmission requires fluid change at 83000 km (50,000 mi again based on the same default percentage). Begin the project through a scan tool to retrieve the current engine oil life percentage as well as automatic transmission fluid life percentage for permanent documentation. To proceed with the replacement of the Engine Control Module (ECM) installation begin by taking off the right front wheelhouse filler panel after disconnecting the ecm electrical connectors then remove the fasteners securing the ecm position. To install the ecm position it on the ecm bracket before using retaining fasteners which must reach 3nm (27 lb in) torque value before reconnecting electrical connectors to the ecm then reinstall right front wheelhouse filler panel. Programming the new ecm remains mandatory whenever such a system component gets installed.