Make sure this part fits

GM 20850446
Antenna Assembly

2006-2010 GM

Customer Questions & Expert Answers (9)
GM 20850446 Antenna Assembly
  • Part Description
    Antenna, Mobile Telephone Radio
  • Replaces
    15837587
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number20850446
    Part DescriptionAntenna, Mobile Telephone Radio
    Other NamesBase; Antenna; Antenna, Power Radio Antenna; Antenna, Radio Antenna
    Item Dimensions5.2 x 4.1 x 2.1 inches
    Item Weight0.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces15837587
    ManufacturerGeneral Motors
    SKU20850446
    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 Trim Engine
    2006-2007 Buick RainierCXL6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
    2008-2010 Cadillac EscaladeBase, Platinum8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2008-2010, 2006 Cadillac Escalade ESVBase, Platinum8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2007-2010 Cadillac Escalade EXTBase8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2007-2010 Chevrolet AvalancheLS, LT, LTZ8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2006-2010 Chevrolet Silverado 1500Hybrid, LS, LT, LTZ, SS, WT, XFE6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX
    2007 Chevrolet Silverado 1500 ClassicHybrid, LS, LT, SS, WT6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2006 Chevrolet Silverado 1500 HDLT8 Cyl 6.0 L GAS
    2007 Chevrolet Silverado 1500 HD ClassicLT8 Cyl 6.0 L GAS
    2006-2010 Chevrolet Silverado 2500 HDLS, LT, LTZ, WT8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
    View More
  • Customer Questions & Expert Answers

    Q:
    Can you help me check if this 20850446 is the right part for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 20850446 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the cellular communications/digital radio antenna on GMC Envoy? Posted by Customer
    A:
    Start by lowering the front area of the headliner before replacing the Cellular Communications/Digital Radio Antenna. Disconnect power connections from digital radio antenna assembly before removing its retaining bolt and retainer from the antenna. A gentle squeeze of the plastic retainer frees the antenna assembly from the roof panel while upward motion allows you to remove it from the roof. You should place the antenna assembly on top of the roof with the proper indexing of the anti-rotation pin during your roof panel descent. Accomplish installation by adding the retainer along with its bolt while securing the bolt at 6 Nm (53 lb in) before joining the antenna electrical connectors. Finally, reinstall the headliner.
    Posted by ChevyPartsGiant Specialist
    Q:
    What should be done after positioning the antenna assembly for the 2006 Buick Rainier? Posted by Customer
    A:
    Tighten the retaining nut to 6 N.m (53 lb in) and connect the antenna electrical connectors.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Antenna
    Q:
    How do you remove the antenna assembly for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Loosen the retaining nut until the antenna assembly can be pulled from the top of the roof.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Antenna
    Q:
    How much should the bolt be tightened for the 2007 Chevrolet Silverado 1500 Classic? Posted by Customer
    A:
    Tighten the bolt to 9 N.m (80 lb in).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Antenna
    Q:
    What is the first step to replace the Cellular and Navigation Antenna Assembly for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    First lower the headliner.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Antenna
    Q:
    What is the first step to replace the electronic navigation antenna for the 2009 GMC Envoy? Posted by Customer
    A:
    First, remove the navigational radio and disconnect the electrical connector from the navigational radio.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Antenna
    Q:
    How much should the bolt be tightened for the 2007 GMC Sierra 1500 Classic? Posted by Customer
    A:
    Tighten the bolt to 9 N.m (80 lb in).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Antenna
    Q:
    How do you install the new antenna mast for the 2009 GMC Envoy? Posted by Customer
    A:
    Position the antenna mast onto the antenna base, ensuring it is fully seated.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Antenna
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM 20850446, Excellent Performance and Perfect Fitment

To ensure reliability, purchase GM part # 20850446 Antenna Assembly. It is sometimes referred to as GM Antenna. Choosing OEM parts is the optimal decision for guaranteeing superior quality and perfect performance. These components undergo stringent quality checks and are carefully constructed to comply with GM's factory specifications, ensuring a smooth installation process.

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