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Test Description The number(s) below refer to the step number(s) on the diagnostic table. 2. This step checks to see if the correct VIN is programmed in the powertrain control module (PCM). 4. This step checks to see if the body control module (BCM) has been replaced. 5. This step explains the proper steps to perform after a BCM has been replaced in order for the <- Back Forward -> Document ID# 385021 1999 Buick Regal Print BCM to operate properly. 6. This step checks to see if the correct VIN is programmed in the BCM. 7. This step explains how to properly program the VIN into the BCM. DTC B1001 Option Configuration Error Step Action Value (s) Yes No 1 Was the SIR Diagnostic System Check performed? — Go to Step 2 Go to SIR Diagnostic System Check 2 1. Install the scan tool. 2. Use the scan tool to verify that the PCM is programmed with the correct VIN by comparing the VIN that is stored in the PCM to the VIN plate of the vehicle. Is the PCM programmed with the correct VIN? — Go to Step 4 Go to Step 3 3 Use the scan tool and/or the techline machine to program the correct VIN into the PCM. Is the programming procedure complete? — Go to Step 9 — 4 Was the BCM replaced? — Go to Step 5 Go to Step 6 5 1. Use the F2 function key and follow the instructions on the scan tool under the BCM SPECIAL FUNCTIONS to reprogram the BCM. This allows the BCM to learn the Restraints ID from the SDM and also to learn other important data that is required. 2. Use the F6 function key and follow the instructions on the scan tool under the BCM SPECIAL FUNCTIONS to program the correct VIN into the BCM. 3. Use the techline machine to perform the theft relearn procedures for the replacement BCM. Are the programming procedures complete? — Go to Step 9 — 6 Use the scan tool to verify that the BCM is programmed with the correct VIN by comparing the VIN that is stored in the BCM to the VIN that is stored in the PCM. Is the BCM programmed with the correct VIN? — Go to Step 8 Go to Step 7 7 Use the F6 function key and follow the instructions on the scan tool under the BCM SPECIAL FUNCTIONS to program the correct VIN into the BCM. Is the reprogramming procedure complete? — Go to Step 9 — 1. Turn the ignition switch to the OFF position. 2. Replace the SDM. Refer to Inflatable Restraint