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GM 3938481 Switch Assembly, Back Up Lamp

Customer Questions & Expert Answers (1)
GM 3938481 Switch Assembly, Back Up Lamp
  • Part Description
    SWITCH, Electrical Switches
  • Manufacturer
    General Motors
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  • Product Specifications
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number3938481
    Part DescriptionSWITCH, Electrical Switches
    Item Dimensions3.2 x 2.1 x 2.0 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU3938481
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65
  • Customer Questions & Expert Answers

    Q:
    How to Remove and Install the Back-up Light Switch on Buick Century and Regal? Posted by Customer
    A:
    For 1975-81 models with column shift automatic transmission and manual door locks, the back-up light switch is on the steering column under the instrument panel, controlled by a tang from the transmission shift tube. Install by positioning in NEUTRAL, insert the switch tang into the shift tube slot, tighten screws, and move to LOW to shear the pin. Ensure the engine starts only in PARK or NEUTRAL, adjust by setting lever in NEUTRAL, loosen screws, align switch, and tighten. For 1982-87 models, disconnect wiring, pry the switch from the column, set in NEUTRAL, align the actuator, and push down on the switch. Ensure it starts only in PARK or NEUTRAL, adjust by rotating the switch housing. Manual transmission cars usually have the back-up switch on the shifter assembly.
    Posted by GMPartsGiant Specialist
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