DTC P158A

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 P158A Cruise Control Calibration Incorrect 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 Engine Control Module Configuration Status in BCM = Cruise Control Configuration Mismatch Actions Taken When the DTC Sets Cruise Control System Status = Disabled 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 there are no other DTCs set, except for DTC P158A. ⇒ If any other DTCs are set Refer to: Diagnostic Trouble Code (DTC) List - Vehicle ⇓ If no other DTCs are set

Note

During the programming procedure, follow the Service Programming System (SPS) prompts for the correct ignition switch position.

3. Reprogram ECU » » K9 Body Control Module & K20 Engine Control Module
4. Operate the vehicle within the Conditions for Running the DTC. » Verify the DTC does not set. ⇓ If the DTC is not set
5. 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