P0747: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P0747 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

60 complaints filed with NHTSA mention P0747, 59 of them since 2015, across 13 different models. The component owners most often filed it under: power train.

Most-reported models

VehicleComplaintsModel years reported
CHEVROLET SILVERADO 1500162020, 2021, 2022, 2023, 2024
GMC SIERRA 150082022, 2023
CHEVROLET SILVERADO 250072021, 2023, 2024
GMC SIERRA 250052020, 2023, 2024
CHEVROLET SUBURBAN52022, 2023, 2024
GMC SIERRA 350042020, 2023, 2024
CHEVROLET SILVERADO 350042020, 2023, 2024
GMC YUKON XL32021, 2023

Manufacturer service bulletins that name P0747

67 technical service bulletins and manufacturer communications filed with NHTSA mention P0747, from 4 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • CHEVROLET SILVERADO 1500 (2023, 2024), bulletin 11001761: This service bulletin provides diagnostic information for technicians on possible replacement of transmission control valve bodies to correct customer concerns of Malfunction Indicator Lamp (MIL) Illuminated, Transmissio…
  • GMC SIERRA 1500 (2023, 2024), bulletin 11001761: This service bulletin provides diagnostic information for technicians on possible replacement of transmission control valve bodies to correct customer concerns of Malfunction Indicator Lamp (MIL) Illuminated, Transmissio…
  • CHEVROLET SILVERADO 2500 (2023, 2024), bulletin 11001776: This service bulletin provides diagnostic information for technicians on possible replacement of transmission control valve bodies to correct customer concerns of Malfunction Indicator Lamp (MIL) Illuminated, Transmissio…
  • GMC SIERRA 2500 (2023, 2024), bulletin 11001776: This service bulletin provides diagnostic information for technicians on possible replacement of transmission control valve bodies to correct customer concerns of Malfunction Indicator Lamp (MIL) Illuminated, Transmissio…
  • GMC YUKON XL (2023, 2024), bulletin 11009187: This service bulletin provides diagnostic information for technicians on possible replacement of transmission control valve bodies to correct customer concerns of Malfunction Indicator Lamp (MIL) Illuminated, Transmissio…
  • CADILLAC CT4 (2023, 2024), bulletin 11009187: This service bulletin provides diagnostic information for technicians on possible replacement of transmission control valve bodies to correct customer concerns of Malfunction Indicator Lamp (MIL) Illuminated, Transmissio…

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.