Dear Debt Adviser: I have two credit cards each at 13.99 percent, totaling $9,100 of debt. I also own my truck outright. It is valued at $11,000. I make $400 in total payments to my credit cards per month. My idea is to sell my truck, pay off the credit cards and buy a used vehicle for around $15,000. This would be lower than what I currently pay to my credit cards.