Finding the mechanic that meets your needs takes more than luck. You may have to visit a variety of mechanics before you find one that gives you all of the guarantees you need that the repairs are being honestly evaluated and that you're not being charged for unnecessary or incomplete work. Once you find the right mechanic, you can dramatically improve the health of your truck and your business.
If you are driving a used truck, things are going to need repair and you will be visiting shops. The more miles your truck has, the more visits to a maintenance facility you are going to make. My best advice would be to build a relationship with your local dealer. If the dealer believes there is a chance you will come back, they are less likely to take you to the cleaners each and every time you show up. If they consider you an out of town guest you can really get taken for a ride.