[6speedTi]

GM Installed incompatible pulley on AC compressor on some LWN engines. Some bozo installed a 5 rib air-conditioning compressor pulley instead of the correct 6 rib air-conditioning compressor. This is only on the 2019 Colorado and Canyon.

https://static.nhtsa.gov/odi/tsbs/2019/MC-10161894-9999.pdf