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Test Description

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  This step checks to see if the correct VIN is programmed in the PCM.
  2. 3:  This step explains the proper steps to perform after a PCM has been replaced in order for the PCM to operate properly.
  3. 5:  This step explains the proper steps to perform after a BCM has been replaced in order for the BCM to operate properly.
  4. 8:  This step explains how to properly program the vehicle theft deterrent (VTD) system.
DTC B1001

Step Action Yes No
Schematic Reference: SIR Schematics 
Connector End View Reference: SIR Connector End Views 
1 Did you perform the Diagnostic System Check - SIR? Go to Step 2  Go to Diagnostic System Check - SIR 
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, 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  With a scan tool and/or techline machine, program the correct VIN into the PCM. Refer to PCM programming in Engine Controls.
Did you complete the programming procedure?		 Go to Step 9  -
4 Was the BCM replaced? Go to Step 5  Go to Step 6 
5  Program the BCM in order for the BCM to learn the restraints ID from the SDM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.
Did you complete the programming procedures?		 Go to Step 8  -
6 Was the SDM replaced? Go to Step 8  Go to Step 7 
7 Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
Did you complete the replacement?		 Go to Step 8  -
8 
IMPORTANT: Use the scan tool to perform the VTD relearn. Do not use the 30 minute manual learn procedure.
Reprogram the vehicle theft deterrent (VTD) system. Refer to Programming Theft Deterrent System Components in Theft Deterrent.Did you complete the reprogramming procedure?		 Go to Step 9  -
9
  1. Verify that all components, connectors, and CPAs are properly mounted.
  2. Use the scan tool in order to clear the DTCs.
  3. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 Go to Step 2  System OK
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