Question 1

How to replace the Engine Control Module (ECM) on Buick LaCrosse?

Accepted Answer

A replacement of the Engine Control Module (ECM) must begin with shutting off the ignition to protect electronic devices. The oil life percentage must be obtained through a scan tool because neglecting this step will reset the oil to 100 percent requiring an oil change after 5000 km (3,000 mi) from the last maintenance. The main relay circuit of the ecm Fuse located in the underhood Fuse block requires measurement with a dvom in an off state where no voltage should be detected. First disconnect the negative cable from the battery before removing the ecm Fuse and the tcm/ipcm Fuse together with the ecm/tcm Fuse from the underhood Fuse block. First depress the lever lock and rotate the clamp while sliding the lock to release and remove the body side (outboard) ecm connector. Modern microcontrollers fail to function when exposed to electrostatic discharges thus pin-to-pin contact should be avoided. To begin uninstall the engine side (inboard) ecm connector and then remove its redundant ground wire and hardware before gpl/ens m5.9 34m xm0172001 page 360 instructs to unfasten the ecm bolts in sequence. You should disassemble the ecm bracket when needed through its bolt removal and by taking away the bracket itself. Reinstall the ecm bracket when possible and fasten its bolts to 10 n.m (89 lb in). The installation process starts by securing the ecm through proper bolt tightening up to 10 n.m (89 lb in) for the bolts and up to 5 n.m (44 lb in) for the redundant ground wire bolt. Start by reconnecting the ecm connector positioned on the engine side and then move to connect the ecm connector placed on the body side. Place back the ecm/tcm Fuse together with tcm/ipc Fuse and ecm Fuse within the underhood Fuse block before reconnecting the battery negative cable. Users should program the ecm through the service programming system before ending the ignition sequence for at least five seconds. To finish execute the idle learn procedure while clearing all dtcs through the scan tool.

Question 2

How to program the Engine Control Module on Buick LeSabre?

Accepted Answer

Start the Engine Control Module programming process with an acquisition of the vehicle's VIN number. Through the Techline terminal users should first select Service Programming followed by Tech 2 before selecting Reprogram ECU and Off-Board Programming Adapter as the ECU location. Append the control module and Off-Board Programming Adapter to the Tech 2 while using the appropriate connector from the Off-Board Programming Adapter kit. The Service Programming Request Information function on the Tech 2 opens communication with the control module to obtain the access code before exiting this function and uninstalling the Off-Board Programming Adapter. The next step involves connecting the Tech 2 to the Techline terminal while ensuring the device is powered on and entering the specific VIN of the vehicle. Look for the database connection message on the Techline terminal before identifying the required programming type and selecting an appropriate calibration file for all secure connections. You will see a summary screen through the terminal interface which you must confirm before the terminal loads all calibration files to the Tech 2. Complete the download process by turning Off the Tech 2 followed by disconnecting the terminal from the Techline connection then reattaching it to the Off-Board Programming Adapter before starting the Service Programming selection. The Off-Board Programming Adapter requires users to keep it ON during any unsuccessful programming attempts while ensuring connection security along with updated Techline software before another attempt at control module reprogramming. Failure to reprogram the control module requires a new replacement of the module. To finish the process select Program on the Tech 2 then leave Service Programming after the download completes before shutting off the Off-Board Programming Adapter.

Question 3

How to program the Engine Control Module on Buick Regal?

Accepted Answer

The Vehicle Identification Number must be acquired as the starting point for programming the Engine Control Module. The techline terminal allows users to choose Service Programming which contains a sequence to follow containing Tech 2 then Reprogram ECU and Off-Board Programming Adapter as the ECU location. Use the desired Off-Board Programming Adapter kit harness to join the control module with the Tech 2 and Off-Board Programming Adapter in sequence. Utilize the Service Programming Request Information function on the Tech 2 to perform module communication and obtain the access code after which exit the function. Connect the Tech 2 to the Techline terminal after detaching it from the Off-Board Programming Adapter while turning the device ON. Users should enter the vehicle's VIN into the Techline terminal until it displays an attachment to database message. The programming process requires identification of the programming type followed by selection of correct calibration files while maintaining a secure connection setup. After verifying your selection through the Techline terminal summary screen it moves directly to transfer the calibration files onto the Tech 2. After completing the download on the Tech 2 you must disable the device from the Techline terminal before moving it to the Off-Board Programming Adapter and reconnecting it for programming. Users must avoid disconnecting the Off-Board Programming Adapter during Service Programming on the Tech 2 unless the programming procedure fails or stalls. Proceed with control module programming only when the secure connections between control module and Off-Board Programming Adapter and the latest version of Techline software are verified. The replacement of the control module should be performed when programming becomes unsuccessful. The download process concludes with Program selection on the Tech 2 then exiting Service Programming to disable the Off-Board Programming Adapter.

OEM Buick Engine Control Module

94 Engine Control Modules found

Buick Control Module

Buick Control Module

Buick Control Module

Buick PCM

Buick ECM

Buick ECM

Buick PCM

Buick ECM

Buick ECM

Buick ECM

Buick PCM

Buick ECM

Buick Control Module

Buick PCM

Buick Control Module

Buick PCM

Buick Control Module

Buick ECM

Buick Control Module

Buick ECM

Buick Engine Control Module Parts Questions & Experts Answers

Related Buick Parts

Browse Buick Engine Control Module by Models