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 MANUALSGMC2016SIERRA 3500 HD SLE, 4D CAB CHASSIS, 6.6L ENG VIN 8, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXCELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM - DIAGNOSTIC TROUBLE CODES
2016 GMC Sierra 3500 HD SLE, 4D Cab Chassis, 6.6L Eng VIN 8, 4WD
Cellular System, Entertainment System, And Navigation System - Diagnostic Trouble Codes
2016 GMC Sierra 3500 HD SLE, 4D Cab Chassis, 6.6L Eng VIN 8, 4WDSECTION Cellular System, Entertainment System, And Navigation System - Diagnostic Trouble Codes
CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM - DIAGNOSTIC TROUBLE CODES
| DTC | Description |
|---|---|
| DTC B0997 | Auxiliary Electronic Control Unit |
| DTC B1024 | Circuit Board Temperature Sensor (Audio Amplifier) |
| DTC B1024 | Circuit Board Temperature Sensor (Radio) |
| DTC B1024 | Circuit Board Temperature Sensor (Human Machine Interface Control Module) |
| DTC B1025-B1135 | Audio Output (UQ3/UQ5) |
| DTC B1025-B1135 | Audio Output (UQG) |
| DTC B1025-B1135 | Audio Output (UQA with Front Bench Seat) |
| DTC B1025-B1135 | Audio Output (UQA with Front Bucket Seats) |
| DTC B123E | Radio Keypad Button Signal |
| DTC B124F | Universal Serial Bus (USB) Programming |
| DTC B124B | USB (IO3) |
| DTC B124B | USB 1 (IOB) |
| DTC B124B | USB 1 (IO4/IO5/IO6) |
| DTC B124C | USB 2 |
| DTC B125A | Antenna Signal |
| DTC B125C | Satellite Antenna |
| DTC B1271 | Theft Protection Active |
| DTC B1277 | Microphone 1 (IO4/IO5/IO6) |
| DTC B1277 | Cellular Phone Microphone (IOB) |
| DTC B127A | Auxiliary Video Input Signal |
| DTC B127E | Front Video Display Output (IO5/IO6 without U42) |
| DTC B127E | Front Video Display Outpu (IO5/IO6 with U42) |
| DTC B127E | Front Video Display Output (IO3) |
| DTC B127E | Front Video Display Output (IOB) |
| DTC B1280 | Rear Seat Entertainment Input Signal |
| DTC B12A4 | Infotainment Faceplate Control Module A |
| DTC B12A6 | Info Display Module Internal Malfunction |
| DTC B12A8 | Optical Media Drive Theft Locked |
| DTC B2455 | Cellualr Phone Microphone |
| DTC B2462 | Global Positioning System (without UE1) |
| DTC B2462 | Global Positioning System (UE1) |
| DTC B2470 | Cellular Phone Antenna |
| DTC B2476 or B2482 | Cellular Phone Select Service Switch |
| DTC B2485 | Wireless Communication (BT) Antenna |
RENDER: 1.0x
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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.