Some 2022 Chevy Tahoe and 2022 Chevy Suburban customers may notice a fluid leak from the rear of their vehicle’s transmission. Now, a possible cause for this issue has been identified, as well as what the dealer will do to fix it.
According to a recent report from GM TechLink, affected units of the 2022 Chevy Tahoe and 2022 Chevy Suburban have have a transmission leak around one or more of the rear case plugs. All 2022 Chevy Tahoe and 2022 Chevy Suburban SUVs are equipped with the GM 10L80 10-speed automatic transmission.
To address this issue, GM recommends that dealer technicians inspect the rear of the transmission for evidence of leaking transmission fluid around the case plugs. If it’s discovered that one or both transmission case plugs are leaking, the transmission crossmember support and mount will be removed for better access to affected components.
GM technicians are instructed to remove and discard any leaking plug on affected units of the 2022 Chevy Tahoe and 2022 Chevy Suburban, removing any residual oil from the threaded hole using a clean shop towel. GM notes that not all of the residual oil may be removed by the cleaning process, and that brake clean-type solvents should not be used to clean the threaded plug hole.
Next, it’s recommended that GM technicians install a new transmission plug, applying ACDelco thread sealant before installation. The plug should be torqued to 11 pound-feet, and the area around the plug should be cleaned one last time.
Finally, the transmission crossmember should be reinstalled, after which the transmission fluid levels should be checked. If more transmission fluid is needed, fluid ULV should be added.
To note, the 2022 Chevy Tahoe and 2022 Chevy Suburban are the second model years of their respective generations (fifth-gen Chevy Tahoe, twelfth-gen Chevy Suburban). Engine options include the 5.3L V8 L84, 6.2L V8 L87, and 3.0L I6 LM2 turbodiesel Duramax. Under the body panels is the GM T1 platform, while production takes place at the GM Arlington plant in Texas.