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 LOOKUPSELECTRICAL COMPONENT LOCATIONSELECTRICAL COMPONENT LOCATOR - FRONT OF VEHICLE/ENGINE COMPARTMENT COMPONENT VIEWSFRONT OF VEHICLE/ENGINE COMPARTMENT COMPONENT VIEWSFRONT OF VEHICLE (CHEVROLET) COMPONENTS
2016 GMC Sierra 3500 HD SLE, 4D Cab Chassis, 6.6L Eng VIN 8, 4WD
Front of Vehicle (Chevrolet) Components
2016 GMC Sierra 3500 HD SLE, 4D Cab Chassis, 6.6L Eng VIN 8, 4WDSECTION Front of Vehicle (Chevrolet) Components
Front of Vehicle (Chevrolet) Components
| Items |
|---|
| 1. E4T Park/Turn Signal Lamp - Right Upper (X88) |
| 2. E4H Headlamp - Right Low Beam E4H Headlamp - Right Low Beam |
| 3. T4M Radio Antenna T4M Radio Antenna |
| 4. T4G Cellular Phone, Navigation, and Digital Radio Antenna T4H Digital Radio Antenna (except UE1) |
| 5. E4G Headlamp - Left Low Beam E4G Headlamp - Left Low Beam |
| 6. E4S Park/Turn Signal Lamp - Left Upper (X88) |
| 7. E4Q Park/Turn Signal Lamp - Left Lower (X88) |
| 8. E4E Headlamp - Left High Beam (X88) E4E Headlamp - Left High Beam |
| 9. E29LF Fog Lamp - Left Front (T3U) E29LF Fog Lamp - Left Front (1500)E29LF Fog Lamp - Left Front (2500/3500) |
| 10. B78A Front Object Sensor - Left Outer (UD5) B78A Front Object Sensor - Left Outer |
| 11. B78C Front Object Sensor - Left Middle (UD5) B78C Front Object Sensor - Left Middle |
| 12. B78D Front Object Sensor - Right Middle (UD5) B78D Front Object Sensor - Right Middle |
| 13. B78B Front Object Sensor - Right Outer (UD5) B78B Front Object Sensor - Right Outer |
| 14. E29RF Fog Lamp - Right Front (T3U) E29RF Fog Lamp - Right Front (1500)E29RF Fog Lamp - Right Front (2500/3500) |
| 15. B9 Ambient Air Temperature Sensor B9 Ambient Air Temperature Sensor |
| 16. E4F Headlamp - Right High Beam (X88) E4F Headlamp - Right High Beam |
| 17. E4R Park/Turn Signal Lamp - Right Lower (X88) |
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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.