OEM 2005 Buick Century Engine Control Module

2005 Buick Century Parts Questions & Experts Answers

• Q: What does the service of the engine control module (ECM) typically involve on 2005 Buick Century?

  A: Service operations for the powertrain control module (PCM) focus on the replacement of the unit or programming electrically erasable programmable read-only memory (EEPROM). A pcm inspection must take place to determine correct component functionality before installation. Install a new service pcm immediately after pcm removal but programming is necessary because the new unit lacks pre-programmed data. Dtc p0602 signals an eeprom failure because the memory either never received programming or is not functioning correctly. Preventing electrostatic discharge damage requires you to stay away from both connector pins and circuit board soldered components. It is essential to kill the ignition power during any connector work on pcm units or power disconnects of battery leads along with pcm pigtails/pcm fuses/jumper cables. Before starting removal processes a technician must retrieve engine oil life percentage data through the scan tool because failure to program new module data will trigger a default engine oil life of 100% that requires an oil change after 5000 km (3,000 MI). The next step requires users to disconnect the negative Battery Cable followed by separating the air cleaner housing cover assembly from the vehicle. The installation process begins by setting aside the pcm assembly and connector harness from the air cleaner housing space. Following the pcm disconnect of its connectors you should remove the pcm. Connect the pcm to connectors before tightening them to 8 n.m (71 lb in) and install it together with the harness into the air cleaner housing before placing on the cover assembly and reattaching the negative Battery Cable. Programming of the new pcm needs to be done according to requirement.