That SUV is a workhorse, but it needs the right hardware to handle a trailer. Maintenance and gear upgrades add up, and the best time to book shop labor is late winter before the spring rush hits and mechanics get slammed.
You are looking at about $400 for a standard hitch install. Don't let that lump sum ruin your monthly cash flow when you can break it into manageable pieces.
Remember that the 0% intro APR is a deadline, not a pass to ignore the bill. If you leave a balance on the card after the 15 months are up, the interest will jump to the standard rate and negate your savings.