This bulletin applies to 2018-2019 Jeep Grand Cherokee vehicles built on or before Feb. 1, 2019, and equipped with a 6.2L supercharged HEMI V8 SRT or 6.4L V8 SRT HEMI engine and Quadra-Trac Active On Demand 4WD, that may require reprogramming the drivetrain control module (DTCM) with the latest software. The customer may experience a shudder on turns during acceleration, and/or a hot clutch-type odor.
Jeep Driveline Jitters
This bulletin applies to 2011-2013 Jeep Grand Cherokee vehicles equipped with the Quadra-Trac-TRAC II 4WD system or two speed on demand transfer case. Owners may indicate that they have experienced a driveline bump felt during acceleration at about 10 mph, the SERV 4WD message appears and the vehicle shifts from 4WD to 2WD, and/or binding of the front driveline while turning on steep grades at about 3-5 mph.