903-630-7999 | 9965 STATE HWY 31 E Tyler, TX 75705
Fleet Computer Diagnostics - Heavy Duty
Preferred On-Site Fleet Services of Texas 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 Preferred On-Site Fleet Services of Texas, we can pull the code and diagnose the problem for you. Give us a call at 903-630-7999 or stop by the shop for our expert assistance.
Computer Diagnostics
Modern fleets 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 fleets. Computer diagnostics help find the root causes of major and potential automobile problems. At Preferred On-Site Fleet Services of Texas, we have state of the art computer diagnostics equipment such as digital code readers, pressure test kits, circuit testers, digital tachometers and more. We use Texa diagnostics. Call 903-630-7999 or visit our fleet shop in Tyler, TX 75705 for all your truck's computer diagnostic needs.
Drivability
Drivability is the degree of smoothness and steadiness of your truck's acceleration. Most modern trucks 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 Preferred On-Site Fleet Services of Texas in Tyler, TX 75705 today. At Preferred On-Site Fleet Services of Texas, we have the necessary tools, training, and technology to diagnose and address your truck'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 truck's incredibly powerful technology, make sure engine controls are working properly. To check if your truck's engine controls are working properly, call Preferred On-Site Fleet Services of Texas today.
PLC Trailer Systems Diagnostics
Call the shop for more info!
Programming
Cummins OE programing & Mack
Volvo OE programming
Testimonials
Scott Bragg, 04/29/2025
Preferred On-Site Fleet Services as an appealing curb appeal with very well kept highway frontage and facilities. I was greeted promptly and received professional service from all team members from service staff. DOT inspector David Hiett did a good and thorough inspection on my truck. I was in and out quickly and the break room with snacks was a comfortable place to wait on my truck.