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Tahoe / Yukon Service Manual

DTC B2B9B

Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis: Strategy Based Diagnosis An overview of each diagnostic category can be found here: Diagnostic Procedure Instructions DTC Descriptor DTC B2B9B Transmission Range Indicator Symptom Byte: 00 – Malfunction Circuit/System Description The indicator has a series of LEDs that show in which range the transmission is. The Transmission Range Indicator is monitored by the ECM via serial data. For an overview of the component/system, refer to: Instrument Cluster Description and Operation Conditions for Running the DTC Ignition » On / Vehicle » In Service Mode Conditions for Setting the DTC K20 Engine Control Module Detected Transmission Range Indicator = Malfunction Actions Taken When the DTC Sets No additional actions taken Conditions for Clearing the DTC The conditions for setting the DTC no longer exist. Reference Information Connector End View Reference Master Electrical Component List Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References

  1. Ignition » On / Vehicle » In Service Mode
  2. Verify DTC B071F is not set. ⇒ If the DTC is set Replace the component: Transmission Range Indicator ⇓ If the DTC is not set
  3. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification Displays and Gauges Component Replacement Reference