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Cadillac 20808029 Turn Signal Switch

2004-2011 Cadillac

Customer Questions & Expert Answers (2)
20808029 GM Turn Signal Switch Product Photo 1 of 2
  • Part Description
    Switch, Turn Signal Lamp
  • Replaces
    01999391, 1999391
  • Manufacturer
    General Motors
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Cadillac
    Manufacturer Part Number20808029
    Part DescriptionTurn Signal Switch; Switch, Turn Signal Lamp
    Item Dimensions10.2 x 5.4 x 5.5 inches
    Item Weight0.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces01999391, 1999391
    ManufacturerGeneral Motors
    SKU20808029
    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
    2005-2011 Cadillac STS6 Cyl 3.6L, 8 Cyl 4.4L, 8 Cyl 4.6L4 DOOR, 4 DOOR(RHD), V 4 DOOR
    2004-2009 Cadillac XLR8 Cyl 4.4L, 8 Cyl 4.6LCONVERTIBLE, V CONVERTIBLE
  • 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 20808029 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    How to remove and install the Turn Signal Switch and wiper switch on Chevrolet Corvette? Posted by Aleks N.
    A:
    Before proceeding in the removal of the multi-function switch, the negative terminal should be disconnected. What follows is removal of the steering wheel and the steering column covers. After this remove the upper and lower torx screws to release the switch from the steering and remove the electrical connectors and then lift it. For installation, the procedure should be done in the reverse of these steps. Concerning the wiper switch, when doing the wiring, first un-do the negative terminal of the battery, and then, the steering wheel trim covers. Squeeze the upper and lower retaining clips at the sides of wiper switch and take wiper switch out in the upward direction and then remove the electrical connector. As for its installation the process is reversed.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Jan 22, 2026

Genuine GM Part 20808029, the Right Choice

To ensure reliability, purchase GM part # 20808029 Turn Signal Switch. It is sometimes referred to as Cadillac Dimmer Switch, Cadillac Headlight Switch, Cadillac Turn Signal Switch, Cadillac Wiper Switch. 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 STS, XLR models.

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