DIAGNOSTICS

Diagnostic Services:

  • Computer diagnostics for medium duty pickups, semis, and heavy duty trucks
  • Diagnostic trouble code (DTC) reading and full system inspections
  • Engine performance diagnostics for low power, rough idle, hard starts, and smoke
  • Fuel system diagnostics to track down contamination, injector, and fuel delivery problems
  • Turbo and boost diagnostics for power loss and boost leaks
  • Electrical diagnostics for wiring, sensor, and module faults
  • Transmission diagnostics for slipping, hard shifting, and unusual noises
  • Brake diagnostics, including ABS faults, uneven braking, and air brake issues
  • Heating and A/C diagnostics
Ready to Get Started?

Schedule Service Now!

Today’s diesel trucks and equipment rely on computers to manage nearly everything, from fuel delivery to emissions to shifting. When something goes wrong, finding the real cause takes the right tools and diesel experience. At Brookwood Truck & Trailer, we diagnose problems on medium duty pickups, semis, ag equipment, and heavy machinery so we can fix the real issue instead of guessing.

Our Diagnostic Services

  1. Check Engine Light Diagnosis:  A warning light can point to a lot of different problems. We’ll read the codes, test the system, and find out exactly what’s going on.
  2. Performance Issues: Low power, rough idle, hard starts, black or white smoke, or poor fuel mileage can all point to a bigger problem. We’ll track down the cause.
  3. Fuel System Diagnosis: Contaminated fuel and failing injectors can cause serious damage to a diesel. We diagnose fuel system problems early, before they turn into expensive repairs.
  4. Electrical System Diagnosis: From wiring and sensors to modules and charging systems, we can find and fix electrical problems that are hard to track down.
  5. Brake System Diagnostics: Whether it’s a spongy pedal, an ABS light, or an air leak, we’ll find the issue and make sure your truck stops safely.
  6. Transmission Diagnostics: We diagnose slipping, hard shifting, and unusual noises so the repair fixes the right problem.

Why Choose Us?

  • Diesel Experience: Medium and heavy duty diesel is what we work on every day.
  • The Right Tools: We use diagnostic equipment built for diesel trucks and equipment.
  • Honest Answers: Before any work begins, we’ll explain what we found and what we recommend.
  • Mobile Service: If your truck or equipment can’t make it to the shop, our mobile service can come to you.

Schedule Your Diagnostic Service

When your truck throws a warning light or just isn’t running right, don’t wait for it to get worse. A small problem caught early can save you a lot of downtime and money.


Call Brookwood Truck & Trailer at (205) 765-6644 to schedule your diagnostic service. Our team will find the problem and get you back to work.