OEM Chevrolet Uplander Engine Control Module

Chevrolet Uplander Engine Control Module Parts and Q&A

• PCM
  19210070
  Q: How to replace the Engine Control Module on Chevrolet Uplander?

  A:

  The first step to replace the powertrain control module (PCM) requires using a scan tool to obtain data about engine oil lifetime percentage. Commence by taking off the left sheet metal diagonal brace together with disconnecting the negative Battery Cable. You need to remove the air cleaner assembly cover before lifting the pcm out of its position in the air cleaner assembly. After disconnecting the pcm harness connectors you must remove the pcm from its installation position in the engine compartment. Installation requires connecting the pcm electrical connectors then placing the pcm within the air cleaner assembly before reinstalling and tightening air cleaner assembly cover screws to 4 n.m (35 lb in). Attach the left sheet metal diagonal brace while reattaching the negative Battery Cable connection. The computer needs eeprom programming after installation of a new pcm. A replacement control module should be programmed to maintain the current engine oil life information since programming it with 100 percent default will trigger an instant 5000-kilometer (3000-mile) oil change period from the previous change. Touching the connector pins or solder components on the circuit board should be avoided to avoid damage from electrostatic discharge while also ensuring correct installation of the control module connector gaskets to stop contaminants from intruding.
• PCM
  12678511
  Q: How to service the Engine Control Module (ECM) on Chevrolet Uplander?

  A:

  Service of Engine Control Module (ECM) requires an assessment to determine whether you need to replace it or reprogram its eeprom. Validate that the inspected ecm is the appropriate replacement part; replace the ecm if it proves faulty by installing the new service part. The prevention of damage requires users to turn off the ignition during all operations involving control module connectors and power connections. The metal case of the control module should avoid touching battery voltage and handling both connector pins and soldered components to protect from electrostatic discharge damage. You should remove debris from the control module connector surfaces followed by an examination of gaskets to ensure contaminants cannot invade the system. The replacement ecm requires programming followed by a crucial task where service ecm labels need identification with both broadcast code and production ecm number. Step one is to record how much engine oil life remains before taking apart the negative Battery Cable. The installation process starts with detaching the left sheet metal diagonal brace followed by air cleaner cover loosening and removal. Next, disconnect the engine harness electrical connectors from the ecm before lifting off the ecm from the air cleaner cover. The installation process requires users to install the ecm onto the air cleaner cover after connecting the engine harness electrical connectors to the ecm as well as tightening the air cleaner assembly cover screws to 4 n.m (35 lb in). After reinstalling the left sheet metal diagonal brace the technician must reconnect the negative Battery Cable. Programming of the eeprom should happen when new ecms are deployed.