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 MANUALSCHEVROLET2018SILVERADO 2500 HD WT, 2D PICKUP, 6.0L ENG VIN G, RWD, GASREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1426 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas
Section 1426 (Cellular System, Entertainment System, And Navigation System)
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION Section 1426 (Cellular System, Entertainment System, And Navigation System)
WARNING: This page is about a different car, the 2009 Saturn Vue. 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 B0000
- DTC B1025, B1035, B1045, or B1055
- 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 Procedures
- DTC B1259
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Diagnostic Aids
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit System Verification
- Circuit/System Testing
- Repair Procedures
- 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 B1446 or B1447
- DTC B2455
- DTC B2462 (Navigation Radio)
- Diagnostic Instructions (Navigation Radio)
- DTC Descriptors (Navigation Radio)
- Circuit Description (Navigation Radio)
- Conditions for Running the DTC (Navigation Radio)
- Conditions for Setting the DTC (Navigation Radio)
- Actions Taken When the DTC Sets (Navigation Radio)
- Conditions for Clearing the DTC (Navigation Radio)
- Reference Information (Navigation Radio)
- Circuit/System Testing (Navigation Radio)
- Repair Procedures (Navigation Radio)
- DTC B2462 (Communication Interface Module)
- Diagnostic Instructions (Communication Interface Module)
- DTC Descriptors (Communication Interface Module)
- Circuit/System Description (Communication Interface Module)
- Conditions for Running the DTC (Communication Interface Module)
- Conditions for Setting the DTC (Communication Interface Module)
- Action Taken When the DTC Sets (Communication Interface Module)
- Conditions for Clearing the DTC (Communication Interface Module)
- Reference Information (Communication Interface Module)
- Circuit/System Testing (Communication Interface Module)
- Repair Procedures (Communication Interface Module)
- DTC B2470
- DTC B2474
- DTC B2476 or B2482
- DTC B2485
- Symptoms - Cellular Communication
- Symptoms - Entertainment
- Symptoms - Navigation Systems
- Bluetooth Malfunction
- Digital Radio Malfunction
- OnStar Global Positioning System (GPS) Data Not Current or Inaccurate
- OnStar Microphone Malfunction
- Navigation System - Voice Guidance Malfunction
- Navigation System - Voice Recognition Malfunction
- OnStar Audio Malfunction
- No Global Positioning System (GPS) Reception
- OnStar Button LED Malfunction
- OnStar Call Center Remote Function Requests Malfunction
- OnStar Button Malfunction
- OnStar Steering Wheel Control Functions Malfunction
- Radio Displays CAL or CAL ERR
- Radio Displays LOC, LOCKED, or CODE
- Radio Poor Reception
- Speaker Replacement Reference
- Speaker Malfunction
- Unable to Contact OnStar Call Center
- OnStar Voice Recognition Malfunction
- Repair Instructions
- OnStar Button Assembly Replacement
- Mobile Telephone Microphone Replacement
- Communication Interface Module Replacement
- Communication Interface Module Battery Replacement
- Wireless Communication Interface Antenna Replacement
- Compact Disc Care and Cleaning
- Radio Replacement
- Digital Radio Receiver Replacement
- Radio Speaker Amplifier Replacement
- Radio Antenna Base Replacement
- Digital Radio Antenna Replacement
- Electronic Navigation Antenna Replacement
- Digital Radio Antenna Cable Replacement
- Mobile Telephone Antenna Coaxial Cable Replacement
- Antenna Cable Replacement
- Radio Antenna Cable Extension Cable Replacement
- Audio System Transceiver Module Replacement
- Video Display Replacement
- Rear Seat Audio Control Replacement
- Audio/Video Disc Player Adapter Replacement
- Radio Front Speaker Grille Replacement
- Radio Front Speaker Replacement
- Radio Front Side Door Upper Speaker Replacement
- Radio Front Side Door Lower Speaker Replacement
- Radio Rear Side Door Lower Speaker Replacement
- Radio Rear Side Door Upper Speaker Replacement
- Radio Rear Compartment Speaker Replacement
- Description and Operation
- Navigation System Description and Operation
- OnStar Description and Operation
- Notes
- Communication Interface Module (CIM)
- OnStar® Button Assembly
- Secondary OnStar® Controls
- OnStar® Microphone
- Cellular and GPS Antennas
- Bluetooth ® (If Equipped)
- Bluetooth ® Features Supported
- Pairing a Bluetooth ® Cellular Phone to the Vehicle
- Back-up Battery (BUB) (If Equipped)
- Audio System Interface
- OnStar® Sleep Cycle
- Features
- 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
- Notes
- Radio Circuit Operation
- Antenna System
- AM/FM Reception
- Digital Radio Receiver (if equipped)
- Speaker Operation
- Audio Amplifier (If equipped)
- Radio Data System (RDS) (If equipped)
- RDS Messages
- MP3/CD Formatting Information for MP3/CD Radios
- Integral Multi Disc CD Changer (IMDX) (If equipped)
- Theft Deterrent
- Radio Error Messages
- OnStar ® (if equipped)
- Steering Wheel Controls (if equipped)
- Using the Auxiliary Input Jack (if equipped)
- Noise Compensation (If equipped)
- Speed Compensated Volume (If equipped)
- 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.