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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 8 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B1001CONDITIONS FOR CLEARING THE DTC
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Conditions for Clearing the DTC

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Conditions for Clearing the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

A current DTC clears following the successful completion of the Setup New VCIM procedure via the scan tool.

DTC B1001

Step Action Yes No
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Reconfigure the system using the Setup new vehicle communication interface module (VCIM) function on the scan tool. Refer to OnStar Reconfiguration .
  2. Cycle the ignition.
Does the DTC reset?		 Go to Step 3  Go to Step 4 
3 Replace the VCIM. Refer to Communication Interface Module Replacement (Cadillac)  or Communication Interface Module Replacement (Except Cadillac) .
Did you complete the replacement?		 Go to Step 4  -
4
  1. Use the scan tool in order to clear the DTCs.
  2. 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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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.