GM Radio Antenna Base
Genuine GM · Part #42747533 · Electrical / Audio
Genuine GM radio antenna base that seals out water and provides the antenna system ground.
- Part number
- 42747533
- Fits
- 2020-2025 Chevrolet Trailblazer / Buick Encore GX (without satellite radio); radio antenna base.
- Replaces
4267993242733716
- AutoNation price
- $82.27 (as of 2026-07-13)
Shop this part at AutoNation Parts →
Before you order
- Confirm it fits with your VIN before buying.
- The numbers under “Replaces” are older, superseded numbers — why GM part numbers change.
Details on this page were taken from the live AutoNation Parts listing (https://www.autonationparts.com/parts/gm-radio-antenna-base-42747533) on 2026-07-13. Prices and availability can change — confirm on the retailer’s page before purchase. Vehicle fitment was cross-checked against PartsGeek(https://www.partsgeek.com/ss/?i=1&ssq=42747533).