The 8-speed transmission (8L45 & 8L90) in the 2018 Chevy Traverse has been known to experience shuddering issues. A new formula of Mobil 1 Synthetic LV ATF HP transmission fluid was developed to address this problem. While the 2019 Traverse uses a 9-speed transmission (9T65) and hasn’t been widely reported to have the same shuddering issue, other problems like flaring, erratic shifting when cold, and rough shifting have been observed.
Whether these issues will eventually affect the 9-speed transmission remains unknown. The Mobil 1 Synthetic LV ATF HP fluid specifically mentions addressing shuddering in the 8L45 and 8L90 transmissions, but doesn’t mention the 9T65. However, this doesn’t definitively exclude its potential use in the 9-speed.
Both the 8-speed and 9-speed transmissions in the Chevy Traverse are electronically controlled and considered to have unique operational characteristics. Intermittent problems with these transmissions may be difficult to resolve without significant changes to the electronic control systems.
Ultimately, if you are experiencing transmission problems with your 2018 Chevy Traverse, consult a qualified mechanic for diagnosis and repair. While a transmission fluid change with the new Mobil 1 fluid might resolve shuddering in the 8-speed transmission, it’s unclear if it will prevent or fix issues in the 9-speed transmission.
