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Diagnostics · Reflashing · Calibration · Updates

Heavy-Duty Truck
Computer Diagnostics
& Programming

Advanced diagnostics for your truck’s computers, aftertreatment and control modules. We diagnose the fault and perform programming, calibrations or updates. You verify the repair.

Aftertreatment
ACM · DPF · DOC · SCR · DEF
Control modules
ECM · TCM · ABS · CAB / BCM

Engine, transmission, braking and cab electronics—plus ADAS, instrument clusters and electronic air suspension.

View diagnostic services Programming & updates

Remote across the U.S. On-site in Southern California

Supported engine & truck brands

  • PACCAR
  • Cummins
  • Detroit
  • Volvo
  • International
  • Caterpillar
  • MaxxForce
  • Hino
  • Isuzu

Available procedures depend on the vehicle, installed module and required software access.

01 / 06Truck computer diagnostics
Your strategic tech ally

Check engine light?
Derate problem?

Heavy-duty truck diagnostics, ECM programming and diagnostic computers. Remote support across the U.S.; on-site service in Southern California.

24/7 TECH SUPPORT
Get support
  • Diagnose
  • Program
  • Calibrate
  • Update
Expert help. Real people.
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Remote or on-site. Get back on the road.
Technical support
One system. All major brands.

Diesel diagnostic
computers.

Supported brands
  • Cummins
  • Detroit
  • PACCAR
  • International
  • Volvo
  • CAT
Get yours today
Campaign artwork: rugged diagnostic laptop and NEXIQ adapter kit
Rugged laptop + NEXIQ USB-Link 3
Connect. Diagnose. Program.
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Clean Truck Check

Clean Truck Check credentialed tester

Stay compliant.
Keep moving.

Credentialed tester support and mobile testing across Southern California.

  • Diagnostics & troubleshooting
  • Repairs to meet emissions requirements
  • Support to help avoid downtime
  • Credentialed tester support
Book a testHow it works
Stay compliant. Keep moving.
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Real hands-on education

Diesel diagnostic
training.

Explore training
New careers start here.

TORQUE EDGE KNOWLEDGE BASE

Understand the code.
Find your next step.

Explore articles & fault codes

  • Technical articles

    Tools, systems and diagnostic procedures.

  • Fault code database

    SPN / FMI references and troubleshooting guides.

  • Common causes

    Understand symptoms and possible sources of faults.

  • Expert advice

    Practical guidance for shops, technicians and fleets.

Articles. Fault codes. Practical answers.