The easy way to determine this is to measure the opening to determine if you have a class V or class IV receiver/Hitch.
A 2 1/2 SQ opening is a Class V.
Here is a copy from the site mentioned below for the Class V:
" Class V hitches are weight carrying (WC) and weight distributing (WD) hitches depending on the vehicle and hitch specifications.
Class V hitches used as weight carrying are rated up to 12,000 lbs. gross trailer weight (GTW) with a maximum trailer tongue weight (TW) of 1200 lbs.
Class V hitches used for weight distributing are rated up to 17,000 lbs. gross trailer weight (GTW) with a maximum trailer tongue weight (TW) of 1700 lbs.
Your ball mount and hitch ball need to both be rated for Class V to safely tow these weight loads. To use this class of hitch for weight distribution requires a weight distribution system.
A Class V hitch has a 2-1/2" square receiver opening.
Class V hitches attach to the vehicle frame only."
Here is the site to look at for a complete explanation of the ratings of each class.
https://www.drawtite-hitches.com/learning_center/general-towing-classes