AFIT Software V14 Now Available

The latest software update (CH-47976-SWV14) for the CH-47976 Active Fuel Injector Tester (AFIT) has recently been released.

The software update includes:

  • 2021 model year and early 2022 model year software for all vehicle applications deploying through July 31, 2021
  • PC Application Software V4.0 (Windows 10/)
  • MCU Firmware V3.44 (FP regulator drive timeout enhancements)
  • DMU Firmware V1.31 (optimizes support for FP regulator PWM control)
  • USB to Serial Driver improved interface compatibility

TIP: For Windows 10, the GMDE-approved Bosch USB to Serial Cable CH-47976-3A is required.


Software Download

The CH-47976-SWV14 software update is available through the Service Workbench selection of “Essential Tools – Software Updates” in GM GlobalConnect (U.S. only). Select the link for AFIT (Active Fuel Injector Tester) Software Update – V14.00 February 2021 and follow the instructions. (Fig. 14)


Fig. 14


In Canada, the software is available for download through the Service Application selection of GM Special Tools & Equipment – Software Updates in GM GlobalConnect.

AFIT Update Instructions are available on the GM Tools and Equipment website under the Support Documents link for the software download.

For questions regarding the software release, contact Bosch Automotive Service Solutions Technical Support at 1-800-GM-TOOLS (1-800-468-6657).


– Thanks to John Staman

Pop Sound at Rear Roof of Cab
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