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GMC 20809978 Mirror Assembly, Outside Rear View

2007-2014 GMC Sierra

Customer Questions & Expert Answers (5)
GM 20809978 Mirror Assembly, Outside Rear View
  • Part Description
    Mirror, (De2) Rear View Mirror, Outside
  • Position
    Rear
  • Replaces
    25775951
  • Manufacturer
    General Motors
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number20809978
    Part DescriptionMirror, (De2) Rear View Mirror, Outside
    Other NamesMirror Assembly
    Item Dimensions20.6 x 14.6 x 10.5 inches
    Item Weight1.20 Pounds
    PositionRear
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces25775951
    ManufacturerGeneral Motors
    SKU20809978
    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
    2007-2014 GMC Sierra6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex, 8 Cyl 6.6L DieselCREW CAB 1 TON, CREW CAB 1/2 TON, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, EXTENDED CAB 1 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 1/2 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5
  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 20809978 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How do you remove and install outside and inside mirrors on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL? Posted by Customer
    A:
    To remove the outside side view mirrors, start by removing the door trim panel and upper corner interior trim panel. If the side view mirrors are power mirrors, disconnect the wiring harness before removing the nuts and detaching the side view mirror from the door. To install, simply reverse the removal process. For the inside mirror, disconnect the electrical connector if there are electronic components. Remove the set screw and slide the mirror up off the support base on the windshield. To reattach the support base, use a special mirror adhesive kit and follow the instructions on the package, allowing the base to bond overnight before attaching the mirror.
    Posted by GMPartsGiant Specialist
    Q:
    How do you remove the outside mirrors for the 2008 Chevrolet Silverado? Posted by Customer
    A:
    Start by removing the door trim panel and upper corner interior trim panel. If the mirrors are power mirrors, disconnect the wiring harness before removing the nuts and detaching the mirror from the door.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Side View Mirrors
    Q:
    What do electric rearview mirrors typically use to adjust the glass for the 2011 Chevrolet Silverado? Posted by Customer
    A:
    Electric rearview mirrors typically use two motors, one for up-down movements and one for left-right movements.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Side View Mirrors
    Q:
    What should you do if the mirror fails the test with jumper wires for the 2010 GMC Sierra? Posted by Customer
    A:
    If the mirror fails the test with jumper wires, you should replace the mirror.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Side View Mirrors
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 20809978, the Right Choice

To ensure reliability, purchase GM part # 20809978 Mirror Assembly, Outside Rear View. It is sometimes referred to as GMC Side View Mirrors. 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 GMC Sierra models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 20809978 Mirror Assembly, Outside Rear View. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed GMC parts information, click here.

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