OEM 2002 Buick LeSabre Engine Control Module

2002 Buick LeSabre Parts Questions & Experts Answers

• Q: How to perform remote programming of the Engine Control Module on 2002 Buick LeSabre?

  A: The procedure for Engine Control Module remote programming requires ignition off followed by connection of the Tech 2 to the data link connector. Start the ignition system while keeping the engine off before verifying that all vehicle accessories rest in the off position. The correct procedure is to use the Tech 2 diagnostic tool to select Service programming before identifying the vehicle information that is being asked. Select the module type that needs programming and pick the formulation of programming for the task. Check that the VIN on the screen matches the one on the vehicle and record actual VIN numbers that differ before making corrections through the Techline terminal interface. Service Programming must be exited and the Tech 2 must be turned OFF before disconnecting the tool from the vehicle. Reconnect the Tech 2 to the Techline terminal then proceed with selecting Service Programming and choosing Tech 2 as the tool under selection. Check the displayed VIN and fix any mistakes before proceeding with Normal calibrations or choosing between Vehicle configuration index (VCI) when the VIN is unavailable or using Reconfigure for tire size modifications. Complete the calibration file selection followed by checking connection security before initiating Reprog to transfer the new calibration to the Tech 2. Following the download process you should disable the Tech 2 while removing it from the Techline terminal before attaching it to the DLC. The first step before starting Service Programming involves selecting Service Programming while leaving the ignition ON with the engine OFF and turning ON the Tech 2. The ignition should not be turned OFF during programming when the process gets interrupted or fails; ensure all PCM and DLC connections remain intact together with an updated Techline software before attempting control module reprogramming. The control module needs replacement when reprogramming becomes unsuccessful. Program Selection should be applied after download completion followed by exiting Service Programming. Turn OFF the ignition for a period of 30 seconds while simultaneously turning OFF the Tech 2. A control module replacement requires the completion of the CKP System Variation Learn Procedure followed by GM Oil Life System reset and Inspection/Maintenance (I/M) Set Procedure and Theft Deterrent System Components programming.