Checking the fluid level and condition should be the first step, when there is an issue with shifting.
There is a transmission fluid check plug located on the side of the transmission case. When that plug is removed the fluid level should be right at the bottom of the opening of the plug. When the fluid gets filled, you will have to fill it till the fluid starts to drip out of the hole.
I have attached the fluid checking procedure below for your reference.
Let me know of any questions.
Images (Click to enlarge)
Friday, May 13th, 2022 AT 1:11 PM