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 2930 (OBJECT DETECTION SYSTEM AND PEDESTRIAN PROTECTION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESFORWARD COLLISION ALERT SYSTEM MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas
Circuit/System Verification
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2017 GMC Sierra 3500 HD, 2017 GMC Sierra 2500 HD, 2017 GMC Sierra 1500, 2017 Chevrolet Silverado 3500 HD, and 2017 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON.
- Verify the scan tool Forward Collision Alert Function Status parameter is not Malfunction.
- If the parameter is Malfunction
Refer to Circuit/System Testing - Frontview Camera Module Malfunction
- If parameter is not Malfunction
- If the parameter is Malfunction
- Verify the forward collision alert indicators turn on and off when commanding the instrument cluster All Indicators On and Off with a scan tool.
- If the indicators do not illuminate
Refer to Circuit/System Testing - Forward Collision Alert Indicator Malfunction
- If the indicators illuminate
- If the indicators do not illuminate
- Verify the forward collision alert distance on the driver information center toggles between far, medium, near and off when cycling the forward collision alert distance switch.
- If the setting does not change
Test or replace the S70L Steering Wheel Controls Switch - Left.
- If the setting changes
- If the setting does not change
- Verify the area of the K109 Frontview Camera Module is not contaminated.
- If contaminated
Clean the windshield
- If not contaminated
- If contaminated
- All OK.
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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.