Cadillac CT4 2019–2022 — technical service bulletin
Bulletin 22-NA-232 · NHTSA communication 10227288 · issued Nov 18, 2022
Technical service bulletin
communication type
Power Train
component
2019–2022
model years
29
vehicle entries
Official summary
This informational bulletin advises the technician of a possibly noise coming from the transmission oil pump.
Vehicles covered
- 2021 Cadillac CT4
- 2022 Cadillac CT4
- 2021 Cadillac CT5
- 2022 Cadillac CT5
- 2019 Cadillac CT6
- 2020 Cadillac CT6
- 2021 Cadillac Escalade
- 2022 Cadillac Escalade
- 2021 Cadillac Escalade Esv
- 2022 Cadillac Escalade Esv
- 2021 Cadillac Escalade NA
- 2019 Chevrolet Silverado 1500
- 2020 Chevrolet Silverado 1500
- 2021 Chevrolet Silverado 1500
- 2022 Chevrolet Silverado 1500
- 2021 Chevrolet Suburban
- 2022 Chevrolet Suburban
- 2021 Chevrolet Suburban 1500
- 2022 Chevrolet Suburban 1500
- 2021 Chevrolet Tahoe
- 2022 Chevrolet Tahoe
- 2019 GMC Sierra 1500
- 2020 GMC Sierra 1500
- 2021 GMC Sierra 1500
- 2022 GMC Sierra 1500
- 2021 GMC Yukon
- 2022 GMC Yukon
- 2021 GMC Yukon XL
- 2022 GMC Yukon XL
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.