JOHN'S GARAGE > Top Level Auto Repair & Maintenance Services > FLEET ELECTRONICS
Fleet Computer Diagnostics - Heavy Duty
John's Garage understands the importance of your On-Board Diagnostics. Give us a call or stop by for a complete diagnostic check up:
Check Engine Light
No one likes to see their truck's "Check Engine" light come on. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. At John's Garage, we can pull the code and diagnose the problem for you. Give us a call at 478-960-8584 or stop by the shop for our expert assistance.
Computer Diagnostics
Modern vehicles are fitted with at least one onboard computer. The computer's main function is to monitor and adjust the engine and transmission. Computer testing and diagnostics is an integral aspect to professional electronic work on modern cars. Computer diagnostics help find the root causes of major and potential automobile problems. At John's Garage, we have state of the art computer diagnostics equipment such as digital code readers, pressure test kits, circuit testers, digital tachometers and more. Call 478-960-8584 or visit our auto shop in Warner Robins, GA 31093 for all your vehicle's computer diagnostic needs.
Drivability
Drivability is the degree of smoothness and steadiness of your truck's acceleration. Most modern vehicles are fitted with on-board computers that continuously check the readings from various sensors. In case of drivability problems, you will receive a warning message on your truck's dashboard. To have your truck diagnosed for drivability issues, visit John's Garage in Warner Robins, GA 31093 today. At John's Garage, we have the necessary tools, training, and technology to diagnose and address your vehicle's drivability issues.
Engine Controls
Basically, an engine control system is an on-board computer in your truck. Like all computers, the engine controls are composed of hardware and software. Automotive engine control systems are responsible for regulating exhaust emissions, and providing increased fuel economy. To get the best out of your vehicle's incredibly powerful technology, make sure engine controls are working properly. To check if your truck's engine controls are working properly, call John's Garage today.
What Our Customers Say
While traveling through Georgia on a Saturday afternoon our travel trailer blew a wheel bearing and we were stranded on I-75. We called many local shops only to be told that they were either closing for the weekend shortly or they could help us later next week. Keith was recommended to us by one RV shop. We called him and he agreed to take a look at it and gave us the address for John's Garage. Keith showed up at 10:30 pm after finishing with another job. He spent about an hour assessing and removing the hub and all the damaged parts. He informed us that he could repair it and would pick up the parts on Sunday morning from his parts supplier. He called mid morning to let us know that his parts supplier did not have the parts available but that they had been ordered on would arrive on Monday morning. He arrived with the parts on Monday morning and had us back on the road before noon. My wife had Googled wheel bearing replacements and determined that it would be between $300 and $500. Keith's invoice was exactly in the middle. We drove from Warner Robins/Macon Georgia all the way north of Toronto Canada and did not have an issue with his work. I would highly recommend Keith if you need repairs in and around Macon GA.
Read more >~ Brian T, 12/16/2025
John's Garage
408 N Armed Forces BlvdWarner Robins, GA 31093
Serving Areas
John's Garage
408 N Armed Forces BlvdWarner Robins, GA 31093
