GM 12581565
PCM

A resolution for the powertrain control module (PCM) consists of replacing this unit with a new component or executing changes to the electrically erasable programmable read-only memory (EEPROM). The pcm replacement process should begin with assessing the current part to ensure proper component selection. Change your position to the new service pcm when the faulty one has been confirmed. It is essential to operate with the ignition off when adding or removing power from the pcm through any connection process such as handling battery cables or pcm pigtails or pcm fuses or jumper cables. Check the pcm connector surface debris while verifying that gaskets on pcm module connectors are properly installed because these protect against contaminants entering the system. The replacement model needs programming before installation. Initiate the repair by detaching the air cleaner assembly before cutting off the negative Battery Cable making sure to avoid contact with the pins or attachment points in order to prevent electrostatic discharge (ESD) damage. After disconnecting each of the pcm harness connectors you must open the spring latch then lift the pcm from the mounting tray before removing it from the engine compartment. Put the pcm inside its mounting tray before you lock the spring latch and connect the pcm connectors and torque each end fastener to 8 n.m (71 lb in). Reinstall the air cleaner assembly but before that reattach the negative Battery Cable and program a new pcm by using the service programming system (SPS).

For powertrain control module (PCM) servicing the servicing options include replacing the unit or programming electrically erasable programmable read-only memory (EEPROM). Apply the right component for replacement by disconnecting the negative Battery Cable first then taking off the harness ground clip from pcm cover (if equipped with RPO NYS) and releasing pcm cover mounting tabs and removing the cover. Disconnect the pcm electrical connectors by first loosening their bolts with the ignition turned off to avoid internal harm. Disconnect the faulty pcm by removing its spring latch then tabs. Install the unit by using the mounting tabs to secure the spring latch while connecting the electrical connectors which should be tightened to 8 n.m (71 lb in). Install the pcm cover along with a harness ground clip if rpo nys is present before reconnecting the negative Battery Cable and performing pcm programming when needed. Follow the procedures to learn the ckp system variation and reset the engine oil life monitor if the reset is required.

Service of the powertrain control module (PCM) leads to two main options which are both pcm replacement and eeprom electrically erasable programmable read-only memory programming. The replacement process requires checking the pcm to verify the accuracy of the selected component. Confirm the replacement part before proceeding with pcm removal to replace it with the new service pcm. Internal pcm damage can be prevented by switching off the ignition before switching power to the pcm through any of battery cables, pcm pigtails, pcm fuses or jumper cables. The surfaces of the pcm connector need to be cleared of any debris and pcm module connector gaskets must be properly installed to avoid contaminant entry. Programming of the new pcm is mandatory for installation. Start the uninstallation sequence by detaching the pcm harness connectors only after switching off the ignition to prevent any harm. After freeing the spring latch on the pcm you should elevate the pcm from its pcm mounting tray to remove it out of the engine compartment. Reposition the pcm inside the mounting tray then fasten the spring latch to the pcm before connecting all pcm connectors while tightening their end fasteners to 8 n.m (71 lb in). Installation of a new pcm requires use of the service programming system (SPS) for programming through proper procedures.

Flip the release levers to the open position and disconnect the ECM connectors from the ECM.

No, not all methods may be available for every vehicle.

Connect the PCM electrical connectors, tightening the screws to 8 N.m (71 lb in).

Engage the mounting tabs of the new PCM, secure the spring latch, and connect the electrical connectors, tightening the bolts to 8 N.m (71 lb in).

It utilizes the same serial data circuit employed by the scan tool for retrieving diagnostic trouble codes (DTCs), displaying data, and clearing DTCs.

The replacement PCM must be programmed.

Disconnect the negative battery cable.