2007 Chevy Silverado HD Duramax,Diesel Allison Transmission

For the cost of a new one, and especially if you have to get a loan, you could tuck away $400 a month (as a truck payment) and keep that for repairs. As long as the truck is not costing anything except normal maintenance, why change? Put that $400 aside every month. In 2 months you'll have $800, in 4 months you'll have $1600. Every month that goes by trouble free, is money you can save (and save to apply to a new-to-you vehicle). If it's working well right now, why change? But do start saving.