OEM 2007 Chevrolet Express 3500 Engine Control Module

2007 Chevrolet Express 3500 Parts Questions & Experts Answers

• Q: What does the service of the engine control module (ECM) typically involve on 2007 Chevrolet Express 3500?

  A: Propelling car systems utilize two fundamental strategies for pcm service that consist of pcm replacement or eeprom programming. An inspection of the pcm must occur before part replacement to verify the correct component will be used. A new service pcm should be installed while following the confirmation process for the faulty pcm removal. Never leave the engine running during the process of control module connector handling because it causes internal damage to these components. Maintain a gap between the metal case of the control module and battery voltage since this creates damage by electric connection. The circuit board pins and soldered components require you to avoid touching them while preventing any debris from accumulating on connector surfaces to avoid electrostatic damage. The control module connector gaskets must be checked for appropriate installation to avoid any contaminant entries into the system. Programming the replacement control module remains essential and should be accompanied by tracking the current engine oil life because a lack of documentation will result in engine oil default at 100 percent thus requiring an oil change at 5,000 km (3,000 mi). Start the replacement operation by scanning a tool to get and record the current engine oil life percentage followed by removing the negative battery lead. You should never reach your fingers toward connector pins or soldered components since electrostatic discharge would cause physical harm. To proceed with the pcm removal disconnect the harness connectors before using the spring latch to raise the device from its mounting tray and extract it out of the engine compartment. Install the pcm by placing it correctly into the mounting tray then fasten the spring latch before connecting the pcm connectors and tightening the fasteners to 8 n.m (71 lb in). The automotive professional must reconnect the negative Battery Cable while performing pcm programming when installing a new pcm.