Cellular Communication System
- Specifications
- Schematic and Routing Diagrams
- Cellular Communication Schematic Icons
- Cellular Telephone Schematics
- Notes
- Cellular Telephone Schematics - Vehicle Communication Interface Module (VCIM), Microphone, Audio Amplifier (Early Production)
- Cellular Telephone Schematics - Vehicle Communication Interface Module (VCIM), Microphone, Audio Amplifier (Late Production)
- Cellular Telephone Schematics (Cellular Telephone Interface Board)
- Cellular Telephone Schematics (Web Radio)
- OnStar Schematics
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Cellular Communication
- Diagnostic System Check - Cellular Communication
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC B2455 (Gen. 4): Open In The Drain Wire Circuit Or A Short To Voltage In The Cellular Microphone Signal Circuit
- DTC B2455 (Gen. 5): Open In The Drain Wire Circuit Or A Short To Voltage In The Cellular Microphone Signal Circuit
- DTC B2470: Vehicle Communication Interface Module Does Not Detect A Cellular Signal
- DTC B2476: Keypad Signal Circuit Voltage
- DTC B2482: A Button Is Depressed On Stuck For More Than 15 Seconds
- DTC B2483 or B2484: Vehicle Communication Interface Module Does Not Detect A Navigation Signal
- DTC U1500: VCIM detects an internal communication malfunction
- OnStar Symptom Diagnosis
- Symptoms - Cellular Communication
- Cellular Telephone Inoperative
- Cellular Telephone - Hands Free Operation Inoperative
- Cellular Telephone - Voice Inoperative During Hands-Free (w/o U45)
- Cellular Telephone - Voice Inoperative During Hands-Free (w/U45)
- Cellular Telephone - Audio Inoperative During Hands-Free
- Cellular Telephone - Noisy Audio During Hands-Free
- Radio Does Not Connect to Internet Service Provider (U45)
- OnStar One or More Buttons Inoperative
- Unable to Contact OnStar Call Center
- Microphone Inoperative - Caller Cannot Be Heard (Gen. 4)
- Microphone Inoperative - Caller Cannot Be Heard (Gen. 5)
- Voice Recognition Inoperative
- OnStar Steering Wheel Control Functions Inoperative
- OnStar Button LED Inoperative
- No (or Noisy) OnStar Audio
- Global Positioning System (GPS) Data Not Current or Inaccurate
- Cellular Telephone Setup (w/o U45)
- Cellular Telephone Setup (w/U45)
- Repair Instructions
- Cellular Telephone Docking Station Replacement
- Cellular Telephone Module Replacement (w/UV8)
- Coaxial Cable Replacement - Cellular Telephone (UE1)
- Antenna Assembly Replacement (UV8)
- Coupling Replacement - Antenna Inner
- Coupling Replacement - Antenna Outer
- Navigation Antenna Replacement
- Communication Interface Module Replacement
- Description and Operation
- Cellular Telephone Description and Operation
- Notes
- Cellular Telephone Handset
- Hands Free Operation
- Cellular Microphone
- Cellular Telephone Module
- Cellular Telephone Antenna
- Cellular Telephone Circuit Description
- Basic Phone Operations
- Message Display
- Keypad Buttons
- Steering Wheel Controls
- Feature Descriptions
- Placing a Call Through the Handset Keypad
- Placing Calls Using the Steering Wheel Controls (SWC)
- Placing Calls Using Voice Recognition
- Cellular Telephone - Driver Information Center Messages
- OnStar Description and Operation
- Notes
- Vehicle Communication Interface Module (VCIM)
- OnStar® Button Assembly
- OnStar® Microphone
- Cellular and Navigation Antennas
- OnStar® Reconfiguration Procedure
- OnStar® Cellular, GPS, and Diagnostic Limitations
- Operation of the Hands Free Cellular Phone
- Dialing a Phone Number Hands Free
- Operation of the OnStar® Speech Recognition Systems
- General Tips for Better Speech Recognition
- Personal Calling Commands
- Cellular Telephone Description and Operation