Stumpy's Auto and Diesel We are not afraid to work hard and put in the hours needed to diagnose, fix, or tow your vehicle. Something that is important to us is honesty. We like to explain to the customer the problems or safety issues that their vehicle has, to a point they understand. This helps the customer feel good and that we can be trusted. We have had many customers thank us for informing them of something that we see to be a potential problem, so they can plan financially for the repairs.