Boost Auto Parts offers a full range of replacement lower glass compatible with all OEM and aftermarket Silverado and Sierra tow mirrors.
If your glass was secured with a screw behind the glass then you will need the replacement mount (see video below for install). This does NOT apply to OEM mirrors, Boost Auto mirrors, and some other aftermarket competitors. Please note our lower glass does not have defrost (nor do OEM mirrors), so if your original lower glass had it you will need to safely insulate the lower defrost wires on your mirrors to prevent shorting.
Cross References to GM OEM numbers: 23444114 and 23444113