Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.3 T, 4L60E/M30REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1327 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30
Section 1327 (Cellular System, Entertainment System, And Navigation System)
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30SECTION Section 1327 (Cellular System, Entertainment System, And Navigation System)
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Diagnostic Starting Point - Cellular, Entertainment, and Navigation
- DTC B0997
- DTC B101D
- DTC B101E
- DTC B1020
- DTC B1024 (with Bose GMLAN Amplifier)
- DTC B1025-B1125
- 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 Procedures
- DTC B125C or B125D
- DTC B1265
- DTC B1271
- DTC B1278 or B1279
- DTC 128A
- DTC 128D
- DTC B1283-B1286
- DTC B1287
- 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 Procedures
- DTC B2455
- DTC B2462
- DTC B2470
- DTC B2476 or B2482
- DTC B2483 or B2484
- Symptoms - Cellular Communication
- Symptoms - Entertainment
- Audio System Troubleshooting Hints
- Digital Radio Poor or No Reception
- Digital Radio Receiver Setup
- OnStar Global Positioning System (GPS) Data Not Current or Inaccurate
- OnStar Microphone Inoperative - Caller Cannot Be Heard
- Navigation System - Voice Guidance Inoperative or Degraded Quality
- Navigation System - Voice Recognition Inoperative
- No (or Noisy) OnStar Audio
- No Global Positioning System (GPS) Reception
- Noise Compensated Volume Inoperative
- OnStar Button LED Inoperative
- OnStar Call Center Remote Function Requests Inoperative
- OnStar One or More Buttons Inoperative
- OnStar Reconfiguration (with TIS 2 Web Gen 4 and later)
- OnStar Steering Wheel Control Functions Inoperative
- OnStar Symptom Diagnosis
- Radio Displays LOC, LOCKED, or CODE
- Radio Poor Reception
- Radio Setup (Without Navigation - U2S, U2R)
- Speaker Replacement Reference
- Speaker Malfunction
- Unable to Contact OnStar Call Center
- OnStar Voice Recognition Inoperative
- Repair Instructions
- Mobile Telephone Microphone Replacement
- Communication Interface Module Replacement
- Radio Replacement
- Radio Control Assembly Replacement (with Navigation Display)
- Radio Control Assembly Replacement (without Navigation Display)
- Radio Volume Compensator Interior Noise Microphone Replacement
- Radio Speaker Amplifier Replacement (With UQA)
- Radio Speaker Amplifier Replacement (with UQS)
- Navigation Information Display Opening Cover Replacement
- Mobile Telephone Digital Antenna Replacement
- Television Antenna Amplifier Replacement
- Radio Antenna Module Replacement
- Television Antenna Cable Replacement
- Television Tuner Replacement
- Mobile Telephone and Vehicle Location Antenna Base Replacement
- Navigation and Traffic Data Antenna Replacement
- Navigation Antenna Replacement
- Radio, Video, Audio Disc Player, and Navigation Information Display Replacement
- Radio Front Speaker Replacement
- Radio Front Side Door Lower Speaker Replacement
- Radio Rear Speaker Replacement
- Radio Rear Side Door Speaker Replacement
- Description and Operation
- Navigation System Description and Operation
- Navigation System Components
- Infotainment Faceplate Control Module
- Navigation Radio
- Touch - Screen Color Display Module
- Color Display Module Actuator
- Remote Auxiliary Jack/USB Adapter
- Global Positioning System (GPS) Antenna
- TV and VICS Antenna
- TV Antenna Module
- TV Antenna Amplifier
- VICS Module
- VICS Optical Beacon Antenna
- Browser
- Planning a Route
- Beam
- Voice Recognition
- OnStar Description and Operation
- Notes
- New Features
- Vehicle Communication Interface Module (VCIM)
- OnStar® Button Assembly
- OnStar® Microphone
- Cellular and Navigation Antennas
- OnStar® Sleep Cycle
- Deactivated OnStar® Accounts
- OnStar® Reconfiguration Procedure
- OnStar® Cellular, GPS, and Diagnostic Limitations
- OnStar® Personal Calling
- Operation of the Hands Free Cellular Phone
- OnStar® Steering Wheel Controls
- OPC Features
- Voice Feedback
- OPC Security/System Lock
- Nametags
- Mobile Identification Number and Mobile Directory Number
- Placing a Call
- Operation of the OnStar® Speech Recognition Systems
- Radio/Audio System Description and Operation
- Navigation System Description and Operation
- Special Tools and Equipment
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.