Make sure this part fits

Cadillac 20786023 Antenna Mast

2011-2012 Cadillac CTS

Customer Questions & Expert Answers (2)
20786023 GM Antenna Mast Illustration 1 of 1
  • Part Description
    Antenna, Radio Antenna
  • Replaces
    20786018, 20786017, 20786020, 20786021, 20791128, 20847277, 20919304
  • Manufacturer
    General Motors
Make sure this part fits
$24.75 MSRP: $68.33
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Cadillac
    Manufacturer Part Number20786023
    Part DescriptionAntenna Mast; Antenna, Radio Antenna
    Item Dimensions6.6 x 3.8 x 3.3 inches
    Item Weight0.40 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces20786018, 20786017, 20786020, 20786021, 20791128, 20847277, 20919304
    ManufacturerGeneral Motors
    SKU20786023
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2011-2012 Cadillac CTS6 Cyl 3.0L, 6 Cyl 3.6L, 8 Cyl 6.2L2 DOOR COUPE, V 2 DOOR COUPE
  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you.
    A:
    You can Select Your Vehicle to check if 20786023 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    How can one access the Antenna module for the 2012 Cadillac CTS? Posted by Martha N.
    A:
    To access the antenna module, remove the C-pillar trim and pull down the rear of the headliner, then disconnect the electrical connectors and remove the module mounting fastener. Installation is the reverse of removal. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Nov 13, 2025

Genuine GM Part 20786023, the Right Choice

To ensure reliability, purchase GM part # 20786023 Antenna Mast. It is sometimes referred to as Cadillac Antenna. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Cadillac CTS models.

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