2020 GMC Sierra 2500 HD
Mileage
14,108
Service Date
5/13/2025
Services Performed
- Check mode 6 data and found all values for exhaust gas sensors 1,2,3 and 4 within specs. Perform diesel particulate filter regeneration in place with autel scan tool. Reset values of nox sensors, exhaust gas sensors, nox cat converter, and road test the vehicle. Exhaust gas sensor and particulate matter monitor would not run. Hook up vehicle to SP2 GM software and see if all modules are up to date. Found PCM, TCM, brake control module and reductant control module all needed update to latest calibration. Recommend program modules to latest update, and road test vehicle for emission monitors.
- Update powertrain control module, reductant control module, transmission control module, and transmission control module.
- Road test vehicle through 3 cold cycles and follow dealer specs to run emission monitors. Monitors have ran and completed, run smog inspection.
- Smog inspection and certificate if passes
GINITTA G. gave our service a 5 star review on 5/13/2025