Owning a car means dealing with sudden leaks, squeals, and heavy steering wheels that make parking feel like a gym workout. Running a car costs more than gas and insurance, and emergency repairs always seem to hit when your bank account is lowest. Repair costs usually bottom out in late summer before winter weather drives up shop demand, but a broken pump won't wait for a seasonal discount.
When your steering wheel gets hard to turn, you need to replace the pump immediately before you lose control of the vehicle entirely. A typical replacement in the US runs about $550, which is steep when you weren't expecting it. We need to cover both lowering the repair bill through smart negotiation and spreading out what is left so you don't panic.
That intro window is a deadline, not free money. If you still have a balance left on the Discover it® Cash Back card when those 15 months are up, you will owe interest on the original amount from day one, which defeats the whole point of spreading out the payments.