Yep, on the Chevrolet Traverse, that yellow-painted SPF 9 body bolt located under the engine air filter box is likely a factory witness mark — it’s painted to show it’s been torqued and inspected during assembly.
That bolt usually secures part of the front body structure to the subframe. If you're removing or servicing components in that area (like the airbox or engine mounts), you might come across it. It’s not uncommon for some of these bolts to be marked for factory reference, but unless you're doing collision or structural repair, it typically doesn’t need to be touched.
Feel free to let us know more details about your Traverse and what exactly you're trying to work on so we can help point you in the right direction ✌🏻
