Cellular, Entertainment, And Navigation System

• Specifications
  • Fastener Specifications
• Schematic Wiring Diagrams
  • Radio/Navigation System Wiring Schematics
    • Radio Power, Ground, Serial Data, and Microphones
    • Amplifier Power, Ground, Serial Data, Remote and Mute Control
    • Radio to Amplifier (UQG)
    • Speakers (UQG)
    • Front Speakers (UQS)
    • Rear Speakers (UQS)
    • Antennas
    • Infotainment Control
    • Auxiliary Input
  • OnStar/Telematics Wiring Schematics
    • Power, Ground, Serial Data, and Antennas (UE1)
    • Controls and Audio Signals (UE1)
• Diagnostic Information and Procedures
  • DTC B1023
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • DTC B1024
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Circuit/System Verification
    • Repair Instructions
  • DTC B1025-B1135
    • 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 B124B
    • 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 B124F
    • 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 B125A
    • 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
    • Component Testing
    • Repair Instructions
  • DTC B125B
    • 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
    • Component Testing
    • Repair Instructions
  • DTC B125C
    • 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
    • Missing XM Channels or No Audio On Certain XM Channels
    • Component Testing
    • Repair Instructions
  • DTC B1271
    • 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
    • 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 B127C
    • 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
    • Diagnostic Instructions
    • DTC Descriptor
    • 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 B1446 or B1447
    • 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
    • Repair Instructions
  • DTC B2455
    • 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 (UE1)
    • 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 B2462 (without UE1)
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Actions Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC B2470
    • 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
    • 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 B248A
    • 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 Testing
    • Component 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
    • 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
  • Infotainment Control Switch Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • 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
    • Missing XM Channels or No Audio On Certain XM Channels
    • Component Testing
    • Repair Instructions
  • Phone Projection Malfunction (Apple CarPlay)
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • Phone Projection Malfunction (Android Auto)
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • OnStar Microphone 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 Testing
    • Repair Instructions
  • No Global Positioning System (GPS) Reception (UE1)
    • 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
  • No Global Positioning System (GPS) Reception (without UE1)
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Actions Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • OnStar Button LED Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit Description
    • 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
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • Radio Information Display Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • 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
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • Speaker Replacement Reference
  • Speaker Malfunction (UQS)
    • 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
  • Speaker Malfunction (UQG)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • 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
  • Navigation System Malfunction (and SD Card Errors)
    • Notes
    • Repair Instructions
  • Voice Recognition Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • SD Card Setup
  • Backup Battery Reset
• Repair Instructions
  • Mobile Telephone Microphone Replacement
  • Communication Interface Module Microphone Replacement
  • Communication Interface Module Replacement
  • Communication Interface Module Battery Replacement
  • Communication Interface Module Bracket Replacement
    • Removal Procedure
    • Installation Procedure
  • Radio Bracket Replacement
  • Radio Replacement
  • Radio Control Assembly Replacement
  • Active Noise Cancellation Microphone Grille Replacement
  • Active Noise Cancellation Microphone Replacement
  • Radio Speaker Amplifier Replacement
  • Multimedia Receptacle Replacement
  • Radio Antenna Amplifier Replacement
  • Radio AM Antenna Signal Filter Module Replacement
  • Infotainment Control Switch Replacement
  • Radio Front Center Speaker Replacement
  • Radio Front Center Speaker Grille Replacement
  • Radio Front Speaker Replacement
  • Windshield Side Garnish Molding Speaker Grille Replacement
  • High Frequency Antenna Replacement
  • Radio Quarter Speaker Replacement
  • Radio Front Side Door Speaker Replacement
  • Radio Control Switch Replacement - Steering Wheel
    • Removal Procedure
    • Installation Procedure
  • Radio Rear Side Door Speaker Replacement
• Description and Operation
  • OnStar Description and Operation (UI3)
    • Notes
    • Telematics Communication Interface Control Module
    • ERA Glonass Two Button Assembly
    • ERA Glonass Test Mode
    • Microphone
    • Cellular and GPS/Glonass Antennas
    • Back-up Battery
    • Audio System Interface
    • ERA Glonass Limitations
  • OnStar Description and Operation (UE1)
    • Notes
    • Telematics Communication Interface Control Module
    • OnStar® Three Button Assembly
    • Secondary OnStar® Controls
    • Microphones
    • Cellular and GPS Antennas
    • Compass Heading
    • Bluetooth®
    • Phantom Phone Calls
    • Back-up Battery
    • WiFi Support
    • 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
    • Firmware Over The Air
  • Radio/Audio System Description and Operation
    • Notes
    • Demo Mode
    • Data Communications
    • Remote Radio Receiver
    • Speaker Operation
    • Antenna System
    • Radio Reception
    • Auto Volume Control (If equipped)
    • Microphones
    • Bluetooth® (If equipped)
    • WiFi
    • Back Office Registration
    • Applications (If equipped)
    • Speech Recognition
    • Navigation System Components and Features (if equipped)
    • Locations Services
    • Valet Mode
    • Teen Driver
    • Theft Deterrent
    • Audio Amplifier (If equipped)
    • Infotainment Controls and Display
    • Steering Wheel Controls (If equipped)
    • USB Port, SD Card Reader and Auxiliary port (If equipped)
    • OnStar® (If equipped)
    • Firmware Over The Air
    • Compass Data
    • Media Disc Player (if equipped)
    • Digital Rearview Camera (if equipped)
• 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