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Windshield Outside Moisture and Headlamp Automatic Control Ambient Light Sensor Replacement

Fig 1: Windshield Outside Moisture and Headlamp Automatic Control Ambient Light Sensor
GM2020378Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Remove the inside rearview mirror mount plate cover. Refer to Inside Rearview Mirror Mount Plate Cover Replacement
1 Windshield Outside Moisture and Headlamp Automatic Control Ambient Light Sensor Retainer
TIP:  Use a small flat-bladed tool to release the locking retainer on the windshield outside moisture and headlamp automatic control ambient light sensor and push the cap upwards.
2 Windshield Outside Moisture and Headlamp Automatic Control Ambient Light Sensor