OEM Chevrolet Silverado 1500 Classic Engine Control Module

Chevrolet Silverado 1500 Classic Engine Control Module Parts Questions & Experts Answers

• ECM
  12602801
  Q: What does the service of the Engine Control Module (ECM) involve on Chevrolet Silverado 1500 Classic?

  A: The service of the powertrain control module (PCM) requires an option of either replacing the pcm or programming the electrically erasable programmable read-only memory (EEPROM). Prior to pcm exchange check that the proper service component is obtained before extracting the old unit with its replacement. Before working with control module connectors and disconnecting power the ignition should remain switched off to protect module components from damage. Always use great caution when controlling the metal case of control modules at battery voltage because this can generate serious harm to the system. Protect against electrical damage by refraining from touching pcm pins as well as soldered components on the circuit board and by inspecting that connector surfaces remain free of debris. In order to stop contaminants from entering the system properly install the control module connector gaskets. The replacement control module requires programming while recording the engine oil life because a lack of proper recording will force the default to 100 percent which requires an oil change at 5000 km (3000 Mi) from the previous change. Start the removal process by using a scan tool to get the current percentage of engine oil life and to record this value before disconnecting the negative Battery Cable. The mounting tabs on the pcm cover need release before removing the cover and performing bolt loosening on the pcm electrical connector when the ignition stays off. The first step to replacing the pcm is separating the electrical connectors followed by unfastening the spring latch and mounting tabs to extract the pcm. Secure the spring latch of the new pcm by fitting its mounting tabs before connecting electrical connectors which should be torqued to 8 n.m (71 lb in). Installation of the pcm cover must occur after both the mounting tabs are correctly positioned and new pcm programming when required.