Cellular System, Entertainment System, And Navigation System

• Specifications
  • Fastener Specifications
• Schematic Wiring Diagrams
  • Radio/Navigation System Wiring Schematics (IO3)
    • Radio Power, Ground, Serial Data and Antenna
    • Speakers
    • Auxiliary Inputs (MYB)
    • Auxiliary Inputs (N8D)
  • Radio/Navigation System Wiring Schematics (IO4, IO5, IO6)
    • Radio Power, Ground and Serial Data
    • Human Machine Interface, Display, Cellular Microphone, Power, Ground and Serial Data
    • Antennas
    • Audio Amplifier Power, Ground and Serial Data
    • Speakers (UQ3)
    • Speakers (UQA)
    • Auxiliary Inputs
    • Auxiliary Inputs (IO4 with N8D)
  • OnStar/Telematics Wiring Schematics
    • Power, Ground, Serial Data and Antennas (UE1)
    • Controls and Audio Signals
• Diagnostic Information and Procedures
  • DTC B0997: Auxiliary Electronic Control Unit Performance
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running DTC
    • Conditions for Setting the DTC
    • Action Taken When DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B1024: Circuit Board Temperature Sensor Above Maximum Threshold (Audio Amplifier)
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B1024: Circuit Board Temperature Sensor (Human Machine Interface Control Module)
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B1025-B1135: Audio Output (UQ3)
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B1025-B1135: Audio Output (UQA)
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B124F: Universal Serial Bus (USB) Programming
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Circuit/System Verification
    • Repair Instructions
  • DTC B124B: USB 1 (IO3)
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B124B: USB 1 (IO4/IO5/IO6)
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B124C: USB 1
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B125A: Antenna Signal
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC B125C: Satellite Antenna
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC B1271: Theft Protection Active
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B1277: Microphone 1 Input Signal
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • DTC B127E: Front Video Display Output Signal (IO4/IO5/IO6)
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • DTC B127E: Front Video Display Output Signal (IO3)
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • DTC B12A4: Infotainment Faceplate Control Module
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken when the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B12A6: Info Display Module Internal Malfunction
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken when the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B12A7: Optical Media Drive
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B12A8: Optical Media Drive Theft Locked
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B1446 or B1447: Backup Power Source
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2455: Cellular Phone Microphone
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2462: Global Positioning System
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC B2470: Cellular Phone Antenna
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC B2476 or B2482: Cellular Phone Select Service Switch
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Symptoms - Cellular Communication
    • Notes
    • Visual/Physical Inspection
    • Intermittent
    • Symptom List
  • Symptoms - Entertainment
    • Notes
    • Visual/Physical Inspection
    • Intermittent
    • Symptom List
  • Application Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • Auxiliary Audio Input Malfunction (IO3)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Auxiliary Audio Input Malfunction: USB 1 (IO4/IO5/IO6)
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Bluetooth Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • Digital Radio Poor or No Reception
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • OnStar Microphone Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Media Disc Player Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • OnStar Audio Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • No Global Positioning System (GPS) Reception
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • OnStar Button LED Malfunction
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • OnStar Call Center Remote Function Requests Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • OnStar Button Malfunction
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • OnStar Steering Wheel Control Functions Malfunction
  • Radio Poor Reception
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • Speaker Replacement Reference
  • Speaker Malfunction (UQ3)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Speaker Malfunction (UQA)
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Unable to Contact OnStar Call Center
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • OnStar Voice Recognition Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • Voice Recognition Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
• Repair Instructions
  • Mobile Telephone Microphone Replacement
  • Mobile Telephone Microphone Grille Replacement
  • Human Machine Interface Control Module Replacement
  • Communication Interface Module Replacement
  • Communication Interface Module Battery Replacement
  • Communication Interface Module Bracket Replacement
  • Radio Replacement
  • Radio Control Assembly Replacement
  • Audio Disc Player and USB Receptacle Replacement
  • Radio Speaker Amplifier Replacement
  • Multimedia Receptacle Replacement
  • Navigation Signal Splitter Replacement
  • Radio Antenna Base Replacement
  • Radio Antenna Replacement
  • Radio Front Center Speaker Replacement
  • Radio Front Speaker Replacement
  • USB Receptacle Replacement
  • Radio Front Side Door Speaker Replacement
  • Radio Control Switch Replacement
  • Radio Control Switch Replacement - Rear
  • Radio Rear Side Door Speaker Replacement (Crew Cab)
  • Radio Rear Side Door Speaker Replacement (Extended Cab)
• Description and Operation
  • OnStar Description and Operation
    • Notes
    • Telematics Communication Interface Control Module
    • OnStar® Three Button Assembly
    • Secondary OnStar® Controls
    • OnStar® Microphone
    • Cellular and GPS Antennas
    • OnStar® RemoteLink
    • Compass Heading
    • Bluetooth® (If Equipped)
    • Bluetooth® Features Supported
    • Pairing a Bluetooth® Cellular Phone to the Vehicle
    • Back-up Battery (If Equipped)
    • WiFi Hotspot
    • Audio System Interface
    • OnStar® Sleep Cycle
    • Features
    • Teletypewriter (TTY) Users
    • Deactivated OnStar® Accounts
    • OnStar® Cellular, GPS, and Diagnostic Limitations
    • Mobile Identification Number and Mobile Directory Number
    • Operation of the OnStar® Speech Recognition Systems
  • Radio/Audio System Description and Operation (IO3)
    • Notes
    • Data Communications
    • Remote Radio Receiver
    • Media Disc Player
    • Speaker Operation
    • Infotainment Controls and Display
    • Antenna System
    • Radio Reception
    • Theft Deterrent
    • Auxiliary Audio Input Jack (If equipped)
    • USB Port and SD Card Reader
    • Valet Mode
    • OnStar ® (If equipped)
    • Auto Volume Control
  • Radio/Audio System Description and Operation (104/105/106)
    • Notes
    • Data Communications
    • Remote Radio Receiver
    • Human Machine Interface Module
    • Media Disc Player
    • Audio Amplifier (If equipped)
    • Speaker Operation
    • Infotainment Controls and Display
    • Antenna System
    • Radio Reception
    • Theft Deterrent
    • Bluetooth ® (If equipped)
    • Applications (If equipped)
    • Auxiliary Inputs
    • Navigation System Components and Features (if equipped)
    • Valet Mode
    • OnStar ® (If equipped)
    • Steering Wheel Controls
    • Auto Volume Control
• Special Tools and Equipment
  • Special Tools
  • Special Tools (MIT Tool Instructions)
    • Bluetooth Pairing for Vehicles with Radio RPO: UF7
    • Holden Radio Bluetooth Pairing Instructions
    • For all other Radios
    • Troubleshooting Guide