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GM 20978535 Rear Driver Door Window

fits year: 2014–2019.

20978535 Gm Genuine Driver Side Rear Door Window

( Brand: Gm ), ( Manufacturer Part Number: 20978535 ), ( Part Type: Window Driver Door ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Cadillac ), ( Year: 2014 2015 2016 2017 2018 2019 ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included )

Review GM Genuine Driver Side Rear Door Window fits 2014–2019

GM OEM Genuine Rear Door Window (20978535)

Description:

The GM OEM (Original Equipment Manufacturer) Genuine Rear Door Window with part number 20978535 is an exact factory replacement for select GM vehicle models. Designed to deliver a perfect fit and function, this rear door window is engineered to match the original in terms of size, shape, and performance.

Constructed from premium materials, this rear door window ensures optimal clarity and durability. It features a tinted glass that not only provides privacy but also helps in reducing interior heat buildup. The window is designed to effectively seal against the weather stripping to prevent air leaks, ensuring a comfortable cabin environment.

The GM OEM Genuine Rear Door Window is easy to install, requiring only basic tools and skills. It comes with all necessary hardware for a hassle-free installation process. The window is also pre-treated with a weatherstrip adhesive to ensure a secure and long-lasting bond with the door frame.

This OEM rear door window is a direct replacement, meaning it is engineered to fit and function identically to the original part. It is essential for maintaining the vehicle's safety and performance standards, ensuring a seamless driving experience.

In summary, the GM OEM Genuine Rear Door Window (20978535) is a high-quality, factory-engineered replacement that delivers optimal clarity, durability, and functionality. It is designed to provide a perfect fit and easy installation, ensuring a comfortable and safe driving experience for you and your passengers.

Buying a GM OEM (Original Equipment Manufacturer) rear door window with the part number 20978535 can have several advantages and disadvantages, depending on your specific needs and circumstances. Here are some potential pros and cons:

Pros:

1. OEM Quality: A GM OEM rear door window ensures that you are getting a factory-original part, which can provide better fit and function than aftermarket alternatives.

2. Long-term Durability: OEM parts are designed to meet the same rigorous quality standards as the original equipment installed on your vehicle. This means that the window may last longer than aftermarket alternatives.

3. Peace of Mind: Installing an OEM part can provide peace of mind, knowing that you are using a part that is specifically designed for your vehicle and that comes with a warranty.

4. Dealership or Certified Mechanic Installation: Installing an OEM part through a dealership or certified mechanic can ensure proper installation, preventing potential issues down the line.

Cons:

1. Cost: OEM parts can be more expensive than aftermarket alternatives due to the brand name and the fact that they are manufactured by the vehicle's original equipment manufacturer.

2. Availability: OEM parts may not be readily available at local auto parts stores or from online retailers, requiring you to order through a dealership or certified mechanic.

3. Longer Turnaround Time: If you need to order the part through a dealership or certified mechanic, it may take longer to receive and install the part compared to purchasing an aftermarket alternative.

In conclusion, buying a GM OEM rear door window with part number 20978535 can provide better fit and function, long-term durability, and peace of mind. However, it can also be more expensive and less readily available than aftermarket alternatives. Ultimately, the decision to purchase an OEM part depends on your individual needs, budget, and preferences. If you value the assurance of a factory-original part and proper installation, an OEM part may be the best choice for you. If you are looking for a more cost-effective solution and can accept the potential trade-offs, an aftermarket alternative may be a better fit.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost. Scottsdale, AZ 85260. Despite what the images or illustrations may show, all parts are sold individually. Despite what images and illustrations may show, all parts are sold individually.

GM Parts America. Electrical parts are not returnable under any circumstance. 8585 E Frank Lloyd Wright Blvd. Parts must be resalable and in the original packaging.

Such as trim, engine size, color, etc. ATTENTION: The catalog displayed is a generic consumer-friendly application and does not decipher all the options your vehicle may have been built with.

part #: 20978535 price

  • $151.19

specifications montiglass:

  • for years: 2014-2019
  • brand: Gm
  • mpn: 20978535
  • part type: Window Driver Door
  • genuine oem: Yes
  • manufacturer warranty: 1 Year
  • fitment type: Direct Replacement
  • make: Cadillac
  • year: 2014 2015 2016 2017 2018 2019
  • parts included: Only Part Reference 1 On The Diagram Is Included

shipping montiglass:

  • service: Standard, Expedited, Overnight
  • type: Fixed
  • cost: $52.95
  • transit: 3-7 Days
  • class: Standard, Expedited, One-day

general montiglass:

  • Exterior Parts Accessories > Glass Window Parts > Auto Glass
  • condition: New

seller montiglass:

  • # reviews: 15770
  • city: Scottsdale, Arizona
  • rating: 96.4%

payments montiglass:

  • wallet: Paypal
  • other
  • credit card: Mastercard

returns montiglass:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller

offer montiglass:

  • started: August 18, 2025
  • sold: 0
  • options: Ship-to-home
  • quantity: 1
  • availability: In Stock
for years: 2014-2019, part type: window driver door, genuine oem: yes, manufacturer warranty: 1 year, fitment type: direct replacement, year: 2014 2015 2016 2017 2018 2019, parts included: only part reference 1 on the diagram is included,
manufacturer: cadillac, category: auto parts > exterior parts accessories > glass window parts > auto glass, sku: 9771994725170752,

Gm 20978535 Is Similar To:

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1 offer $151.19 USD
  • Offer #1: $151.19 price + $0.00 shipping estimate = $151.19* total. Laminated Window, Left Hand (Driver's Side), Rear.FREE SHIPPING

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