In Tennessee you only pay sales tax on a slide in camper when purchased and take delivery within the State of TN. This is the same as with any other retail purchase in the State of Tennessee.
Tennessee treats a truck campers as CARGO therefore a slide in truck camper is not registered in Tennessee. Tennessee does NOT issue titles, register or require tags on slide in truck campers. Your local country clerk will not have a record of the truck camper because Tennessee does not register a truck camper.
The truck hauling the "Cargo Slide In Camper" must be registered, licensed and insured the same as any other road going vehicle in the State of Tennessee. Tennessee does require the registration of and issue titles to other types of towable RV's, trailers and powered Motorhomes.
Other states may also consider a Slide In Camper as Cargo and therefore not require registration. Check with your local DMV for laws in your state of residence.
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