2015 GMC Terrain Transmission Fluid Capacity: A Guide to Maintaining Your Vehicle

2015 GMC Terrain Transmission Fluid Capacity

When it comes to maintaining your 2015 GMC Terrain, one of the essential tasks is ensuring that the transmission fluid is at the correct level. The transmission fluid plays a crucial role in lubricating the transmission components and keeping them cool. If the fluid level is too low or if it’s contaminated, it can lead to serious damage to your vehicle’s transmission system. In this article, we will discuss the transmission fluid capacity for the 2015 GMC Terrain, so you can keep your vehicle running smoothly.

Transmission Fluid Capacity

The transmission fluid capacity for the 2015 GMC Terrain depends on the type of transmission your vehicle is equipped with. Here are the fluid capacities for the two possible transmissions:

Transmission Type Fluid Capacity (Quarts) Fluid Capacity (Liters)
6-Speed Automatic Transmission (MHC) 9.5 quarts 9 liters
6-Speed Automatic Transmission (MH7) 6.9 quarts 6.5 liters

It’s important to note that these capacities are approximate values and may vary slightly depending on factors such as the transmission’s condition and whether or not the transmission cooler has been flushed.

Transmission Fluid Type

Using the correct type of transmission fluid is crucial for the optimal performance and longevity of your 2015 GMC Terrain’s transmission. Here are the recommended transmission fluid types for the two possible transmissions:

Transmission Type Recommended Fluid Type
6-Speed Automatic Transmission (MHC) Dexron VI Automatic Transmission Fluid
6-Speed Automatic Transmission (MH7) Dexron VI Automatic Transmission Fluid

It’s important to use the recommended fluid type to ensure proper lubrication and performance of your vehicle’s transmission. Using the wrong fluid type can lead to transmission damage and costly repairs.

Checking and Adding Transmission Fluid

Checking and adding transmission fluid to your 2015 GMC Terrain is a relatively straightforward process. However, it’s essential to follow the correct steps to ensure accurate fluid level readings and prevent overfilling. Here’s a step-by-step guide:

  1. Park your vehicle on a level surface and engage the parking brake.
  2. Start the engine and let it idle for a few minutes to warm up the transmission fluid.
  3. Locate the transmission dipstick, which is usually labeled and located near the back of the engine bay.
  4. Remove the dipstick and wipe it clean with a lint-free cloth or paper towel.
  5. Reinsert the dipstick fully into the transmission and then remove it again.
  6. Check the fluid level on the dipstick. It should be within the “Full” or “Hot” range.
  7. If the fluid level is low, add the recommended transmission fluid gradually, checking the level frequently to avoid overfilling.
  8. Reinsert the dipstick fully and ensure it is securely in place.

Remember to always refer to your vehicle’s owner’s manual for specific instructions and safety precautions related to checking and adding transmission fluid.


Maintaining the correct transmission fluid level in your 2015 GMC Terrain is essential for the smooth operation and longevity of your vehicle’s transmission. By following the recommended fluid capacities and types, as well as the proper procedures for checking and adding fluid, you can ensure that your transmission stays in optimal condition. Remember, neglecting transmission maintenance can lead to costly repairs, so it’s always better to be proactive and take care of your vehicle’s transmission fluid needs.

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