ACDelco 15087886 GM Original Equipment M6 X 1.0 -6H Thread Radio Antenna(Colors may vary) ACDelco GM OE Antennas have signal strength, clarity, and signal interference protection Made with durable materials to withstand exposure to harsh weather and car washes GM-recommended replacement part for your GM vehicles original factory component Offering the quality, reliability, and durability of GM OE Manufactured to GM OE specification for fit, form, and function