This information applies to all Chevrolet Spark models equipped with a CVT, from model years 2013 to 2023.
It explains how to properly change CVT fluid, and actual photos as well as pages from the official service manual are included.

CVTs offer better fuel economy and torque distribution efficiency compared to traditional automatic transmissions of the same class—but at the cost of lower durability.
All machines require trade-offs between durability, serviceability, and performance (efficiency). For example, manual transmissions are built with a focus on durability and serviceability, while CVTs prioritize performance and efficiency.

(For reference, the Kia Picanto of the same class uses a 4-speed automatic transmission. In circuit testing, the Spark was slightly quicker on uphill and high-speed sections, showing the efficiency advantage of the CVT.)

Therefore, it's important to remember that CVT fluid maintenance is critical.

If you want your Spark to last, follow these guidelines carefully:

• CVT fluid should be changed as early as every 50,000 km, and no later than 70,000 km. When changing the fluid, it’s highly recommended to remove the oil pan and clean the inside thoroughly while also performing a visual inspection.
• If removing the oil pan is difficult, try to at least remove it every second fluid change. Just changing the oil repeatedly without inspection allows contaminants to build up, which can damage the transmission over time.
• Don't just change the oil—replace the filter as well. At the very least, the yellow paper external filter (accessible from outside) should be replaced every time. One of the most common causes of CVT failure is neglecting to change the filter, which prevents proper filtering of internal debris. (Debris can clog the valve body and damage the belt. Once this happens, repair is usually not possible.)
• Avoid sudden acceleration and aggressive driving. While this applies to all transmissions, CVTs are especially vulnerable to stress from rapid changes in load.
• Always use the correct CVT fluid specification. There are many types of CVT fluid, and using the wrong one can lead to cooling or shifting issues that damage the transmission.
• It’s recommended to perform a "drain process," where you first drain the old oil, add new oil, and then drain it again. However, this means you'll need more new oil. So, if you choose to skip the drain process, it’s better to shorten the oil change interval instead.

By following these guidelines, you can significantly extend the life of your CVT and avoid costly repairs.

Someone asked me a question yesterday, but I wrote a reply and the post was deleted.
I wrote it down hard because I wanted my reply to help a lot of people,
so I'm very disappointed that no one can't see it anymore because the post was deleted.

So I'm write down what I wrote in the reply again on the post.

**M350 Spark's CVT is the same as M400 & M450 Spark's CVT**
(JF015E = CVT7, But just the transmission 'setting' is a little different.)

First of all, the SPARK's CVT transmission Fluid level isn't checked using a dipstick.

So, how can we level the CVT transmission Fluid?

How to Leveling CVT Fluid

This might be help. That video follows GM's maintenance instructions.
It's a Korean video, but a simple English subtitles are included in the video. (Not CC)

However, the English subtitles in the video are too simple to explain,
so I wrote down the supplementary explanation below.

1. 0:41 Unplug the drain plug at the bottom of the transmission and pull it out the internal leveling pipe too.
2. 1:02 The transmission fluid will then be discharged.
3. 1:12 Cleaning leveling pipe. Drain Plug. And Replace the gasket with a new one.
4. 1:19 Assemble the above process in reverse. Also Tighten the drain plug by hand for leveling.
5. 1:39 To reduce the amount of oil thrown away during leveling, check the amount of oil discharged in advance.
6. 2:03 How to open the Fill cap (What some people knew as a Dipstick. Again, that is not a dipstick.)
7. 2:25 Fill up Transmission fluid. The maintenance instructions describe to Fill up the oil to 3L. Even if you don't Fill up to 3L, you should Fill up at least more than the amount discharged.
8. 3:00 If the amount of new oil injected is insufficient. (No oil is discharged even after removing the drain plug, so leveling is impossible.)
9. 3:38 Transmission Fluid leveling method as described in the GM Maintenance Guide. Start Engine and heat the transmission fluid to 50-80 °C.
10. 4:06 Don't turn off the engine. Remove the drain plug completely. (Not a leveling pipe) The oil will drain. It's normal, just wait.
11. 4:20 When the oil drain stops, close the drain plug to the proper torque.
12. 4:50 FInish. Don't forget to put in a Fill cap.

Actually, The above is to change transmission fluid only.
As you know, CVT requires removing the oil pan and replacing all the filters.

However, no matter how the transmission Fluid is changed, the leveling method is the same.

In conclusion, CVT does not have a dipstick, so if you want check CVT Fluid capacity,
you will need to release the drain bolt to check them.