TIS To obtain the latest electronic controller calibration information for your vehicle, enter the vehicle's 17 character Vehicle Identification Number (VIN) and select 'Get CAL ID'. To obtain the Calibration Verification Number (CVN) for any calibration part number, enter the part number of the calibration ID and select 'Get CVN.' VIN: Get CAL ID Part Number: Get CVN Visit the General Motors site to see the entire GM family of brands. General Motors 2003. All rights Reserved.
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