Cadillac CT4 2017–2021 — technical service bulletin
Bulletin PIP5654A · NHTSA communication 10193447 · issued Apr 9, 2021
Technical service bulletin
communication type
Equipment
component
2017–2021
model years
32
vehicle entries
Official summary
This Preliminary information communicates to the dealer technician that the valve body Part Unique Number (PUN) may contain the letter O or the number 0.
Vehicles covered
- 2020 Cadillac CT4
- 2021 Cadillac CT4
- 2020 Cadillac CT5
- 2021 Cadillac CT5
- 2019 Cadillac CT6
- 2020 Cadillac CT6
- 2018 Cadillac Escalade Esv
- 2019 Cadillac Escalade Esv
- 2020 Cadillac Escalade Esv
- 2021 Cadillac Escalade Esv
- 2017 Chevrolet Camaro
- 2018 Chevrolet Camaro
- 2019 Chevrolet Camaro
- 2020 Chevrolet Camaro
- 2021 Chevrolet Camaro
- 2019 Chevrolet Silverado 1500
- 2020 Chevrolet Silverado 1500
- 2021 Chevrolet Silverado 1500
- 2019 Chevrolet Suburban
- 2020 Chevrolet Suburban
- 2021 Chevrolet Suburban
- 2018 Chevrolet Tahoe
- 2019 Chevrolet Tahoe
- 2020 Chevrolet Tahoe
- 2021 Chevrolet Tahoe
- 2019 GMC Sierra 1500
- 2020 GMC Sierra 1500
- 2021 GMC Sierra 1500
- 2020 GMC Yukon
- 2021 GMC Yukon
- 2019 GMC Yukon Denali
- 2018 GMC Yukon Denali 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.