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Tahoe / Yukon Service Manual

DTC P30D2

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 P30D2 Cruise Control System Torque Request Too High Circuit/System Description For an overview of the component/system, refer to: Cruise Control Description and Operation Conditions for Running the DTC Ignition/Vehicle = On Vehicle Speed. = Greater than 40 km/h (25 MPH) Cruise Control = On Frequency the DTC runs = Continuously — After the running conditions are met — For greater than 5 s Conditions for Setting the DTC Cruise Control System Torque Request Too High Actions Taken When the DTC Sets DTCs listed in the DTC Descriptor category = Type C DTC Conditions for Clearing the DTC DTCs listed in the DTC Descriptor category = Type C DTC Reference Information Schematic Reference Cruise Control Schematics Connector End View Reference Master Electrical Component List Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs DTC Type Reference Powertrain Diagnostic Trouble Code (DTC) Type Definitions Scan Tool Reference Control Module References Circuit/System Verification

  1. Ignition » On / Vehicle » In Service Mode
  2. Verify DTC P30D2 is not set. ⇒ If the DTC is set 2.1. Replace the component: K20 Engine Control Module ⇓ If the DTC is not set
  3. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification For control module replacement, programming, and setup refer to: Control Module References