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Buick 15789012 Ignition Lock Cylinder

2004-2007 Buick Rainier

Customer Questions & Expert Answers (4)
15789012 GM Ignition Lock Cylinder Illustration 1 of 1
  • Part Description
    Cylinder Kit, Ignition Switch
  • Replaces
    88954645
  • Manufacturer
    General Motors
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number15789012
    Part DescriptionIgnition Lock Cylinder; Cylinder Kit, Ignition Switch
    Item Dimensions8.3 x 8.3 x 1.8 inches
    Item Weight0.70 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces88954645
    ManufacturerGeneral Motors
    SKU15789012
    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
    2004-2007 Buick Rainier6 Cyl 4.2L, 8 Cyl 5.3L4 DOOR
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 15789012 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What should be done after rotating the Ignition Lock Cylinder to the Run position for the 2006 Chevrolet Trailblazer? Posted by Nishant M.
    A:
    Push in the retainer pin and pull the key and the lock cylinder from the ignition switch/lock cylinder housing. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / Jan 25, 2024
    Q:
    How should the Ignition Lock Cylinder gear be rotated after inserting the ignition switch of the 2005 Buick Rainier? Posted by Weston H.
    A:
    Use a screwdriver to rotate it clockwise until it reaches the Start position, then release it into the Run position. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Fernando / May 23, 2025
    Q:
    I am looking to change the ignition lock cylinder. Can you tell me what comes with this kit? i.e. keys and/or hardware. If the keys and hardware does not come with the cylinder kit, what will I need. Posted by Darrin B. / 2003 Light Truck Trailblazer / Envoy / Bravada (4WD / AWD)
    A:
    P# 15789012 IS A COMPLETE CYLINDER WITH TUMBLERS DOES NOT INCLUDE KEY
    Answered by GM Parts Specialist Sammy / Jan 03, 2018

Genuine GM Part 15789012, the Right Choice

To ensure reliability, purchase GM part # 15789012 Ignition Lock Cylinder. It is sometimes referred to as Buick Ignition Lock Assembly, Buick Ignition Lock Cylinder. 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 Buick Rainier models.

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