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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Driver Assistance Systems) >> Diagnostic Information and Procedures >> Forward Collision Alert System Malfunction >> Circuit/System Description

Circuit/System Description

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The forward collision alert system is controlled by the B174W Frontview Camera - Windshield. The system is designed to detect vehicles directly ahead, within a distance of approximately 60 meters (197 ft). The forward collision alert system operates at speeds above 3 km/h (2 mph). When the system detects a vehicle in the path ahead, the green vehicle ahead indicator will illuminate on the P16 Instrument Cluster. When approaching another vehicle too rapidly, the P43 Collision Alert Indicators will flash and the radio will sound an audible alert. The vehicle ahead indicator on the P16 Instrument Cluster will transition to red and remain illuminated when following a vehicle ahead too closely. These actions are requested by the on the P16 Instrument Cluster via serial data. The forward collision alert switch is part of the S155 Lane Departure Warning Switch and is used to adjust the sensitivity of the forward collision alert system.