OEM 2006 GMC Savana 3500 Engine Control Module

2006 GMC Savana 3500 Parts Questions & Experts Answers

• Q: What does the service of the engine control module (ECM) typically involve on 2006 GMC Savana 3500?

  A: Service operations on the powertrain control module (PCM) usually include pcm substitution or eeprom electrical erasable programmable read-only memory programming. Inspection of the pcm happens first to confirm the right part will be used for replacement. Before installation of the new service pcm confirm the diagnosis of the faulty unit then proceed with the replacement. You should switch off the ignition before working with pcm connectors because this prevents internal damage when disconnecting or reconnecting power. The pcm connector should have all debris removed thoroughly and connector gaskets need to be checked for proper installation because these gaskets protect against contaminant entry. Programming of the new pcm forms a necessary step in the replacement process. Your first step should be to use a diagnostic tool for retrieving oil life percentage data since non-programming the replacement module will set engine oil to its maximum value which requires a change at 5,000 km (3,000 mi) from the prior service. Disconnection of both the negative Battery Cable and pcm harness connectors must happen while maintaining no contact with connector pins and soldered components to stop electrostatic discharge (ESD) damage. Before removing the pcm from its mounting tray users should press the spring latch then lift it upwards. After that users should take it out of the engine compartment. Return the pcm to its mounting tray by fastening the spring mechanism before connecting all connectors and tightening the fasteners to 8 n.m (71 lb in). The last step includes reconnecting the negative Battery Cable followed by programming the pcm if it is brand new.