Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Replacing Oil, Filter, and Seals in GMC Sierra Automatic Transmission

Model: GMC Sierra MK 5 - Years: 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Part: Transmission fluid

See other generations:
Video tutorial

Maintaining the automatic transmission is essential to preserve its lifespan and efficiency. For the GMC Sierra, start by removing the oil pan, where you will find the magnet that collects metal shavings.

This magnet must be removed for thorough cleaning. Next, replace the filter, seals, and actuator springs, which should be replaced since they are constantly under stress.

After installing all the replacement parts from the kit, refill the transmission with the appropriate oil, ensuring to check the level.


Updated on 29 May 2026 by ScegliAuto


Related tutorials

How to Change the Engine Oil in a GMC Sierra?
How to Change the Engine Oil in a GMC Sierra?
GMC Sierra (2007-2014 / MK 3) To change the engine oil in a GMC Sierra, access the bottom of the engine bay, where you will find the oil drain plug. By unscrewing this plug, you c…
How to Reset the Oil Service Light in a GMC Sierra?
How to Reset the Oil Service Light in a GMC Sierra?
GMC Sierra (2014-2018 / MK 4) In this tutorial, you will see how to reset the oil service light in the GMC Sierra pickup, a very simple and quick operation that should only be don…
How to Reset the Oil Light on a 2016 GMC Sierra
How to Reset the Oil Light on a 2016 GMC Sierra
GMC Sierra (2014-2018 / MK 4) If you notice the oil pressure light stays on when you start your 2016 GMC Sierra, even after changing the oil and filter, follow these steps to manu…

Other guides you may be interested in

How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

Watch the video!


by ScegliAuto

More videos