That tow hitch changes what your car can do, turning a standard weekend ride into a gear-hauling machine. But between the receiver, the wiring harness, and the labor, the bill adds up fast before you even hook up a trailer. Early spring is the sweet spot to buy this upgrade, right before the rush of towing season hits and shops get slammed with demand.
When you are talking numbers with the service desk, separate the price of the parts and labor from how you plan to pay. You want to negotiate the total out-the-door price down first, and only then figure out your payment strategy for covering the cost over time.
Remember that the 0% intro APR for 15 months on purchases and balance transfers is a hard deadline, not free money. If you still have a remaining balance when that window ends, standard interest kicks in on what is left over.