2012 GMC Sierra Transmission Fluid Capacity: Facts and Guidelines

2012 GMC Sierra Transmission Fluid Capacity


If you’re a proud owner of a 2012 GMC Sierra, it’s essential to know the transmission fluid capacity to keep your truck running smoothly. In this article, we’ll provide you with the blunt and straightforward information you need, without any unnecessary sugarcoating. So, let’s dive right in and get to the facts!

Transmission Fluid Capacity and Type

To ensure your 2012 GMC Sierra’s transmission operates at its best, you must use the correct amount and type of transmission fluid. Here’s a table that outlines the transmission fluid capacity in both quarts and liters:

Transmission Fluid Capacity Quarts Liters
4-Speed Automatic Transmission 11.2 10.6
6-Speed Automatic Transmission 13.3 12.6

Transmission Fluid Replacement

If you’re planning to replace your transmission fluid, here’s a step-by-step guide to help you get the job done:

  1. Ensure your vehicle is parked on a level surface and the engine is turned off.
  2. Locate the transmission fluid dipstick, usually found near the back of the engine bay.
  3. Using a clean cloth or paper towel, remove the dipstick and wipe it clean.
  4. Reinsert the dipstick fully into the transmission and then remove it again to check the fluid level.
  5. If the fluid level is below the recommended range, you’ll need to add more transmission fluid.
  6. Using a funnel, carefully pour the appropriate amount of transmission fluid into the dipstick tube.
  7. Recheck the fluid level using the dipstick, ensuring it falls within the recommended range.
  8. Once the fluid level is correct, securely reinsert the dipstick and close the hood of your Sierra.

Safety Precautions

While performing any maintenance task on your vehicle, safety should always be a top priority. Here are a few crucial safety precautions to keep in mind:

  • Always wear protective gloves and eyewear to prevent any potential contact with harmful fluids.
  • Ensure the vehicle is parked securely on a level surface to avoid any accidents or injuries.
  • Allow the engine and transmission to cool down before attempting any work to avoid burns.
  • Dispose of used transmission fluid responsibly, following local regulations and guidelines.


Knowing the transmission fluid capacity for your 2012 GMC Sierra is vital for maintaining the longevity and performance of your truck. By following the blunt and straightforward information provided in this article, you’ll be able to keep your transmission running smoothly and avoid any unnecessary complications. Remember to prioritize safety and take the necessary precautions while working on your vehicle. Stay informed, stay safe, and enjoy the reliable performance of your GMC Sierra!

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