OEM 2003 Buick Rendezvous Engine Control Module

2003 Buick Rendezvous Parts Questions & Experts Answers

• Q: How to replace the Engine Control Module (ECM) on 2003 Buick Rendezvous?

  A: Inspect the powertrain control module (PCM) to verify its correct part before starting the replacement process. The pcm replacement process starts by disconnecting the negative Battery Cable before you remove the left sheet metal diagonal brace and the air cleaner assembly cover so you can lift out the pcm from its assembly. Remove the pcm from its engine compartment after disconnecting all connectors from the harness. Connect the harness to the new pcm by tightening all pcm harness screws to 8 n.m (71 lb in). Putting the pcm inside the air cleaner assembly completes the installation by reattaching the left sheet metal diagonal brace and installing the air cleaner assembly cover with secure tightening of its retainers. Reinstall the negative Battery Cable as the final step. The service programming system (SPS) procedures need to be used for eeprom programming after installing a new pcm. Correct identification of the vehicle during its service life entirely depends on proper labeling of the broadcast code and production pcm number which must be transferred to the service pcm label. The pcm features components that should not get opened by users and remains free of user serviceable parts. An unprogrammed eeprom along with a faulty eeprom will trigger dtc p0602.