Cadillac CT4 2023–2024 — technical service bulletin
Bulletin 24-NA-088 · NHTSA communication 11001761 · issued May 17, 2024
Technical service bulletin
communication type
Power Train
component
2023–2024
model years
14
vehicle entries
Official summary
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, Transmission Not Shifting/Default Mode - DTC P0747 Set.
Vehicles covered
- 2023 Cadillac CT4
- 2023 Cadillac CT5
- 2023 Cadillac Escalade
- 2023 Cadillac Escalade Esv
- 2023 Chevrolet Silverado 1500
- 2023 Chevrolet Silverado 2500
- 2024 Chevrolet Silverado 2500
- 2023 Chevrolet Silverado 3500
- 2024 Chevrolet Silverado 3500
- 2023 GMC Sierra 1500
- 2023 GMC Sierra 2500
- 2024 GMC Sierra 2500
- 2023 GMC Sierra 3500
- 2024 GMC Sierra 3500
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.