Cadillac XT6 Transmission Fluid Capacity

Cadillac, an iconic name in the luxury automobile industry, launched the XT6 in 2020 as part of its effort to strengthen its position in the SUV market. The Cadillac XT6 is a midsize luxury SUV designed to deliver comfort, luxury, and performance in a single package, filling a gap in Cadillac’s lineup between the compact XT5 and the full-size Escalade.

The XT6 stands out for its spaciousness, with three rows of seating, making it an excellent choice for families or anyone requiring additional cargo and passenger space. But what truly sets it apart is its refined design, both inside and out, coupled with advanced safety and convenience features, reflecting Cadillac’s commitment to luxury and technology.

Underneath its striking aesthetics, the XT6 houses a capable powertrain that ensures a smooth and powerful ride. Key to its performance is the vehicle’s transmission system, responsible for delivering power from the engine to the wheels. The transmission fluid plays a vital role in this system, helping to maintain the smooth operation of the gears while also preventing overheating.

This guide will explore the Cadillac XT6’s transmission fluid type and capacity, provide tips for changing the transmission fluid, and discuss the importance of these aspects in maintaining your vehicle’s optimal performance. Whether you’re an owner or a potential buyer, understanding these aspects can help you keep your XT6 in top shape and ensure a satisfying driving experience.

2021 Cadillac XT6

Cadillac XT6 Transmission Fluid Capacity And Transmission Fluid Type

Since its debut, the first-generation Cadillac XT6 has made a name for itself in the crowded luxury midsize SUV segment. Known for its roomy interior, high-end cabin materials, and state-of-the-art tech features, the XT6 also offers a smooth and comfortable ride with commendable performance credentials.

Under the hood, the XT6 is equipped with a 9-speed automatic transmission that delivers smooth, quick shifts for a refined driving experience. This transmission is paired with either a standard 2.0-liter turbocharged 4-cylinder engine or an available 3.6-liter V6 engine.

The Cadillac XT6 uses a specially designed automatic transmission fluid that meets GM’s specific requirements for performance and durability. The exact type can be found in your vehicle’s owner’s manual, but it’s typically a Dexron VI fluid, which is a common transmission fluid type for GM vehicles. It’s crucial to use the correct fluid type to ensure the proper functioning and longevity of the transmission.

The transmission fluid capacity for the Cadillac XT6’s 9-speed automatic transmission varies depending on the operation. For a regular change, where not all fluid is removed, you’re looking at approximately 5.3 quarts. However, if the transmission has been overhauled or the entire system is drained (including the torque converter), the total fluid capacity is around 10.1 quarts (9.5 liters).

It’s important to check the exact fluid level with the dipstick or fill procedure in your vehicle’s owner’s manual, as overfilling can lead to issues as much as underfilling can.

These specifications are general estimates, and the exact details may vary based on the specific model year of the XT6. Always consult your vehicle’s owner’s manual or a professional mechanic for the most accurate information.

General Tips on Changing Transmission Fluid for Cadillac XT6

Signs of Needing a Transmission Fluid Change:

  1. Transmission Slipping: If your vehicle is having difficulty shifting gears or is slipping out of gears, this may be a sign of low transmission fluid.
  2. Delayed Gear Engagement: If there’s a delay when you shift from Park to Drive or Reverse, your vehicle might need a transmission fluid change.
  3. Unusual Noise: If you notice a whining, buzzing, or humming noise when your vehicle is in neutral, this could signal that the fluid is breaking down or there may be mechanical problems.
  4. Transmission Overheating: Excessive heat is a transmission’s enemy. Overheated transmission fluid can cause damage to your transmission, which could result in expensive repairs.
  5. Dark or Burnt Fluid: Healthy transmission fluid should be red or slightly pink. If the fluid is dark, dirty, or smells burnt, it’s time to change it.

Process of Changing the Transmission Fluid:

  1. Preparation: Gather your supplies, including the correct type and quantity of transmission fluid, a new filter (if required), a drain pan, and necessary tools.
  2. Draining the Fluid: With your vehicle securely elevated, locate the transmission drain plug. Position your drain pan and then remove the plug to allow the fluid to drain.
  3. Replacing the Filter: If applicable, remove the transmission pan and replace the filter.
  4. Adding New Fluid: Replace the drain plug and lower your vehicle. Then, add the new transmission fluid through the fill plug located in your engine compartment.
  5. Checking Fluid Level: Start your vehicle and let it run for a few minutes to circulate the new fluid. Then, check the fluid level using the dipstick to ensure it’s within the recommended range.

Safety Considerations:

  1. Vehicle Lifting: Always use secure jack stands when elevating your vehicle. Never work under a vehicle supported only by a jack.
  2. Protective Equipment: Wear gloves and safety glasses to protect yourself from fluid splashes.
  3. Proper Ventilation: If you’re working in a garage, ensure it’s well-ventilated. Transmission fluid fumes can be harmful in enclosed spaces.

Remember, if you’re uncomfortable performing a transmission fluid change yourself, it’s best to hire a professional to ensure the job is done safely and correctly. Always consult your vehicle’s owner’s manual for specific guidance.

How Much Does It Cost To Change The Transmission Fluid In Cadillac XT6?

The cost to change the transmission fluid in a Cadillac XT6 can vary depending on your location and whether you choose to do the work yourself or hire a professional. On average, you can expect to pay between $150 to $250 for a professional transmission fluid change. This includes the cost of the fluid and the labor.

If you decide to perform the task yourself, the cost will primarily be for the transmission fluid and any tools you might need. Remember to also consider the cost of properly disposing of the old fluid.


Maintaining the correct transmission fluid level and using the appropriate fluid type is essential for the health of your Cadillac XT6’s transmission. This can significantly influence the vehicle’s performance and lifespan. The transmission fluid serves to cool and lubricate the transmission components, helping prevent overheating and ensuring smooth gear changes.

Regularly checking your transmission fluid and changing it as recommended by the manufacturer can help you avoid potential transmission problems and costly repairs in the future. It’s a relatively small investment that can have a significant impact on your vehicle’s performance and your driving experience.

Remember that the specifics provided in this guide are general advice and the details may vary based on the specific model year of the XT6. Always consult your vehicle’s owner’s manual or a professional mechanic for the most accurate information. As a Cadillac XT6 owner or potential owner, understanding these aspects of vehicle care can ensure you continue to enjoy the luxury, comfort, and performance that the Cadillac brand promises.


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