Repair and Diagnosis: Electrical: Gauges: Telematics

• Repair Instructions
  • Roof antenna, 4D
    • To remove
    • To fit
  • Roof antenna, 5D
    • To remove
    • To fit
  • Antenna, boot lid, CV
    • To remove
    • To fit
  • OnStar control module (673), 4D
    • To remove
    • To fit
  • OnStar control module (673), CV
    • To remove
    • To fit
  • OnStar control module (673), 5D
    • To remove
    • To fit
  • Reconfiguration, OnStar system
    • Notes
    • Procedure
  • Microphone, CV
    • To remove
    • To fit
  • Microphone, 4D/5D
    • To remove
    • To fit
  • OnStar panel
    • To remove
    • To fit
  • Head unit, audio/audio with navigation (353/635)
    • To remove
    • To fit
  • Roof antenna, XC Quad, US, 4D
    • To remove
    • To fit
  • Roof antenna, XC Quad, US, 5D
    • To remove
    • To fit
  • Antenna, boot lid, XM Quad, US, CV
    • To remove
    • To fit
  • UHP unit (721)
    • To remove
    • To fit
  • Phone holder, UHP
    • To remove
    • To fit
• Description and Operation
  • Brief description, Communication
    • Overview
    • Description
    • Tel 1
    • UHP
    • OnStar
  • Main components, Telematics
  • Detailed description, Communication
    • Tel 1
    • UHP
    • OnStar
  • Telephone, bus information
  • Antenna, GPS/mobile phone (467/627)
    • Location
    • Main purpose
    • Type
    • Connection
  • Antenna, mobile phone/GPS/OnStar/satellite radio (US/CA)
    • Location
    • Main purpose
    • Type
    • Connection
  • UHP control module (721)
    • Location
    • Main task
    • Type
    • Power supply, ground and bus communication
  • OnStar control module (673)
    • Location
    • Main task
    • Type
    • Power supply, ground and bus communication
  • OnStar control panel (469)
    • Notes
    • Location
    • Main task
    • Type
      • Power supply, ground and bus communication
  • Microphone, mobile phone (634)
    • Location
    • Main task
    • Type
    • Connection
  • Satellite radio receiver (US/CA)
• Component Locator
  • Instrument panel electrical center 22 (IPEC)
    • Location
    • Main task
    • Type
    • Connect
    • Fuses
    • Relays
  • Fuse 3, fuse box in the dashboard 22
    • Notes
    • List of components
  • Fuse 21, dashboard electrical center 22
    • Notes
    • List of components
  • Steering wheel contact unit, horn/switches (336b)
  • Main unit, radio (353)
  • Connection, mobile phone (375)
  • Mobile phone connection, cradle (375c)
  • OnStar control panel (469)
  • Antenna, mobile phone (627)
  • Switch unit, steering wheel (633)
  • Microphone, mobile phone (634)
    • 4D/5D
    • CV
  • Unit, audio/navigation (635)
  • OnStar control module (673)
  • Rear electrical center 701 (REC)
    • Location
    • Main task
    • Type
    • Connect
    • Fuses
    • Relays
  • Fuse 24, main fuse box in the luggage compartment 701
    • Notes
    • List of components
  • Unit, steering column assembly, (CIM) (703)
  • Body Control Module (707)
  • UHP unit (721)
  • Signal converter, telephone (738)
  • Connector H8-2
  • Connector H33-1
  • Connector H33-4
  • Connector H102-1
  • Crimp connection J68, instrument harness
    • Notes
    • List of components
  • Crimp J80, instrument harness
    • Notes
    • List of components
  • Crimp J86, instrument harness
    • Notes
    • List of components
  • Crimp connection J87, instrument harness
    • Notes
    • List of components
  • Crimp connection J88, instrument harness
    • Notes
    • List of components
  • Crimp J99, main wiring harness
    • Notes
    • List of components
  • Crimp connection J186, instrument harness
    • Notes
    • List of components
  • Crimp connection J187, instrument harness
    • Notes
    • List of components
  • Crimp connection J188, instrument harness
  • Crimp connection J205, main harness
    • Notes
    • List of components
  • Crimp J360, center console harness
    • Notes
    • List of components
  • Grounding point G14
    • Notes
    • Connected components:
  • Grounding point G43
    • Notes
    • Connected components
  • Grounding point G47A
    • Notes
    • Connected components
  • Grounding point G47B
    • Notes
    • Connected components
• Specification
  • Microphone
  • OnStar control module (673)
  • OnStar control panel (469)
    • Notes
    • Resistance values
  • Satellite radio receiver, XM™ (US/CA)
• Special Tools and Equipment
  • Tech 2
  • 82 93 474 Removal tool
  • 84 71 179 Removal tool, clips
  • 84 71 203 Removal tool
• Diagnostic Information and Procedures
  • Fault Diagnosis, General
    • Diagnostic Concept
      • General
      • Diagnostic tool
      • Diagnostic Strategy
      • Fault diagnosis by symptom
      • Adjustments
      • Add / Remove
      • Bus
    • Testing for open/short circuits
      • General
      • Testing for open circuits by measuring voltage.
      • Testing for open circuits by measuring resistance
      • Testing for short circuits to ground
    • Fault diagnosis strategy for electronic systems
      • Notes
      • General fault diagnosis in electronic systems
        • Control module
        • Outputs
        • Inputs
    • Procedures before dismantling the control module
      • Notes
      • When the control module is to be replaced
      • The action involves the following:
    • Measures after changing the control module
      • SPS programming
      • Add
      • This happens with regard to data:
    • Actions when replacing electrical components
      • Notes
      • When the component is to be replaced
    • On Board Diagnostics
      • Notes
      • Examples of diagnostic trouble codes:
      • Table, standards for diagnostic trouble codes
      • Internal control module faults
      • Analog inputs
      • Digital inputs
      • Outputs
      • To bear in mind in respect of On Board Diagnostics:
    • Connectors, handling and checking
      • Handling
      • Checking
    • OnStar does not work following control module replacement
  • Fault Diagnosis, Symptoms
    • GPS data defective
      • Fault symptom
      • Conditions
      • Diagnostic help
    • Cannot contact OnStar Call Center (OCC)
      • Fault symptom
      • Conditions
      • Diagnostic help
    • LED on keypad, defective function
      • Fault symptom
      • Conditions
      • Diagnostic help
    • Microphone out of order
      • Fault symptom
      • Conditions
      • Checking the wiring harness
    • OnStar keypad, one or more buttons do not work.
      • Fault symptom
      • Conditions
      • Diagnostic help
    • Voice activation, poor function
      • Fault symptom
      • Conditions
      • Diagnostic help
    • Voice control not working.
      • Fault symptom
      • Conditions
      • Diagnostic help
    • Telephone not working properly. No diagnostic trouble codes stored.
      • Notes
      • Fault symptom
      • Diagnostic help
    • No GPS data
      • Fault symptom
      • Conditions
      • Diagnostic help
• Schematic and Routing Diagrams