So I've been scouring this forum, YouTube etc for a definitive answer on the Automatic transmission filter. Yes, you can buy one on eBay for $30 bucks but don't bother. You need dex6 fluid.
Using this press release https://media.gm.com/media/us/en/chevrolet/vehicles/sonic/2012.detail.html/content/Pages/news/us/en/2012/Mar/0322_sonic.html
I was able to find the type of transmission the 6T40 and through sheer luck I found a video of a complete tear down here https://youtu.be/TIs0FIuYQk4?t=1858 there is a filter but god help you to replace it.
A great fluid change video is here: https://www.youtube.com/watch?v=4eTZA12YoBs
Auto trans fluid change/flush procedure, Click here.
Thanks to User 6speedti for posing this:
Using this press release https://media.gm.com/media/us/en/chevrolet/vehicles/sonic/2012.detail.html/content/Pages/news/us/en/2012/Mar/0322_sonic.html
I was able to find the type of transmission the 6T40 and through sheer luck I found a video of a complete tear down here https://youtu.be/TIs0FIuYQk4?t=1858 there is a filter but god help you to replace it.
A great fluid change video is here: https://www.youtube.com/watch?v=4eTZA12YoBs
Auto trans fluid change/flush procedure, Click here.
Thanks to User 6speedti for posing this:
From the service manual. Manual transmission.
Draining Procedure
Note:
The fluid check bolt at the front of the transmission may not be opened.
The transmission fluid drained out during the pre-delivery inspection may be re-used. New transmission fluid must be used during servicing work.
The transmission fluid must be brought up to operating temperature before draining.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the drivetrain and front suspension frame skid plate, if equipped. Refer to Drivetrain and Front Suspension Frame Skid Plate Replacement.
Clean away all dirt and debris from the transmission fluid drain fastener area.
Position an appropriate container under the transmission.
Remove the transmission fluid drain fastener (1).
Allow the transmission fluid to drain into the container.
Caution:
Refer to Fastener Caution.
Install a new transmission fluid drain fastener and tighten to 20 Y (15 lb ft)
.
Remove the container used to catch the used transmission fluid from under the vehicle.
Install the drivetrain and front suspension frame skid plate, if equipped. Refer to Drivetrain and Front Suspension Frame Skid Plate Replacement.
Filling Procedure
Lower the vehicle.
Lower the vehicle.
Remove the engine control module with the bracket from the battery tray. Refer to Engine Control Module Replacement for the 1.2L or 1.4L engine, or Engine Control Module Replacement for the 1.6L or 1.8L engine.
Clean away all dirt and debris from the transmission fluid fill fastener area.
Remove the transmission fluid fill fastener (1).
Fill the transmission with the appropriate amount of fluid. Refer to Fluid and Lubricant Recommendations and Manual Transmission Specifications.
Install a new transmission fluid fill fastener and tighten to 30 Y (22 lb ft)
.
Install the engine control module with the bracket to the battery tray. Refer to Engine Control Module Replacement for the 1.2L or 1.4L engine, or Engine Control Module Replacement for the 1.6L or 1.8L engine.