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Home >> GMC >> 2021 >> Yukon AT4 >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Driver Assistance Systems >> Diagnostic Information and Procedures >> DTC U3000 (B218L Side Obstacle Detection Control Module - Left or B218R Side Obstacle Detection Control Module - Right) >> Circuit/System Description
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Circuit/System Description

The B218L Side Obstacle Detection Control Module - Left and B218R Side Obstacle Detection Control Module - Right perform a routine of self-check functions to determine if it is a normal operating state.