Cellular System, Entertainment System, And Navigation System

• Specifications
  • Fastener Specifications
• Schematic Wiring Diagrams
  • Radio/Navigation System Wiring Schematics (Encore)
    • Power, Ground, Serial Data, and Audio Input (Encore)
    • Antennas (Encore)
    • Amplifier Power, Ground and Inputs (Encore)
    • Amplifier to Speakers (Encore)
    • Navigation Display (Encore)
  • Radio/Navigation System WiringSchematics (Trax)
    • Power, Ground, Serial Data, Antenna, and Audio/Video Inputs (Trax)
    • Speakers (Trax with UQ3, UW4, or UW6)
    • Amplifier Power, Ground, and Inputs (Trax with UQA)
    • Amplifier to Speakers (Trax with UQA)
  • OnStar/Telematics Wiring Schematics (Encore)
    • Telematics Communication Interface Control Module (Encore)
  • OnStar/Telematics Wiring Schematics (Trax)
    • Telematics Communication Interface Control Module (Trax with UE1)
  • Cellular Telephone Wiring Schematics (Encore)
    • Cellular Telephone Microphone (Encore)
  • Cellular Telephone Wiring Schematics (Trax)
    • Cellular Telephone Microphone (Trax without UE1)
• Diagnostic Information and Procedures
  • DTC B0000: Vehicle Speed Information
    • 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
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • DTC B0997: Info Display Modul
    • 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 B1020: Auxiliary Electronic Control Unit (ECU)
    • 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, B1035, B1045, or B1055: Audio Output
    • 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 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 B1265: Switched 14 Volt
    • 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 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 B1287: Amplifier Control 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 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 (OnStar)
    • 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 B2455: Cellular Phone Microphone (Radio)
    • 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
  • 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
  • DTC B2485: Wireless Communication (BT) Antenna
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System 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
    • Repair Instructions
  • DTC U0255-U0257: Lost Communication with Infotainment Module
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • 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
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Bluetooth Malfunction (without UPF)
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • Bluetooth Malfunction (UPF)
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • 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
  • Navigation System - Voice Recognition Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • 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 Controls Malfunction (Monochrome Display)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Radio Controls Malfunction (Color Display)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Radio Information Display Malfunction (Monochrome Display)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • Radio Information Display Malfunction (Color Display)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
    • Circuit/System Verification
    • 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
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • Speaker Replacement Reference
  • Speaker Malfunction
    • 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
  • OnStar Voice Recognition Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
• Repair Instructions
  • Mobile Telephone Microphone Replacement (Encore)
  • Mobile Telephone Microphone Replacement (Trax)
  • Communication Interface Module Replacement (Trax)
  • Communication Interface Module Replacement (Encore)
  • Communication Interface Module Battery Replacement (Trax)
  • Communication Interface Module Battery Replacement (Encore)
  • Wireless Communication Interface Antenna Replacement (Trax)
  • Wireless Communication Interface Antenna Replacement (Encore)
  • Communication Interface Module Bracket Replacement (Trax)
  • Communication Interface Module Bracket Replacement (Encore)
  • Radio Replacement (Encore)
  • Radio Replacement (Trax)
  • Radio Control Assembly Replacement (Encore)
  • Radio Volume Compensator Interior Noise Microphone Replacement
  • Audio Disc Player and USB Receptacle Replacement (Encore)
  • Audio Disc Player and USB Receptacle Replacement (Trax)
  • Radio Speaker Amplifier Replacement
  • Navigation Signal Splitter Replacement (Encore)
  • Radio Antenna Base Replacement
  • Radio Antenna Replacement
  • Radio and Telephone Control Switch Replacement
  • Radio Windshield Side Garnish Molding Speaker Replacement (Encore)
  • Radio Windshield Side Garnish Molding Speaker Replacement (Trax)
  • Radio Front Side Door Speaker Replacement
  • Radio Rear Side Door Speaker Replacement
• 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 (with Monochrome Display)
    • Notes
    • Radio Circuit Operation
    • Information Display and Controls - Display RPO UAG
      • Radio/HVAC Communications
    • Antenna System
    • Radio Reception
    • Speaker Operation
    • Audio Amplifier (If equipped)
    • Theft Deterrent
    • Bluetooth ® (UP9) (If equipped)
    • Applications (If equipped)
    • Auxiliary Audio Input Jack (If equipped)
    • USB Port (If Equipped)
    • Multimedia Player Interface Module (MPIM) (If Equipped)
    • OnStar ® (If equipped)
    • Steering Wheel Controls (If equipped)
    • Auto Volume Control
  • Radio/Audio System Description and Operation (with Color Display)
    • Notes
    • Radio Circuit Operation
    • Information Display and Controls
      • Notes
      • Navigation Radio Communications Diagram
    • Antenna System
    • Radio Reception
    • Speaker Operation
    • Audio Amplifier (If equipped)
    • Theft Deterrent
    • Bluetooth ® (UP9) (If equipped)
    • Applications (If equipped)
    • Auxiliary Audio Input Jack (If equipped)
    • USB Port (If Equipped)
    • Navigation System Components and Features (if equipped)
    • OnStar ® (If equipped)
    • Steering Wheel Controls (If equipped)
    • 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