OEM 2005 Chevrolet Classic Engine Control Module

2005 Chevrolet Classic Parts Questions & Experts Answers

• Q: How to replace the Engine Control Module (ECM) on 2005 Chevrolet Classic?

  A: Replacing the powertrain control module (PCM) should start with switching off the ignition to avoid internal damage when operating on the pcm connector. The first step involves disconnecting the negative Battery Cable because the removal of the left closeout/insulator panel follows next. To disconnect the pcm harness connectors push down the locking tab and pull up the release lever while being careful to avoid touching the pins and soldered components on the pcm to prevent electrostatic discharge damage. Use the pcm retaining tab to depress it while lifting the pcm away from the pcm bracket. Check that the service number written on the new pcm corresponds with the faulty unit. The new pcm insertion should proceed until the retaining tab finds its locking position before you attach the pcm harness connectors and secure their release levers. Return the left closeout/insulator panel then reconnect the negative terminal of the battery. To finish up programming includes both pcm replacement programming followed by the implementation of the crankshaft position (CKP) system variation learn process.