Manufacturer: Schrader
Manufacturer part number: 20398
Frequency: 433 mhz
OEM part number (s) coverage: 56029398AB, 56029398AA, 4250B668, 68241067AB
TPMS Relearn website: http://www.tpmsrelearn.com/2016/12/08/chrysler-2/
The TPMS sensor that is used in the Jeep Grand Cherokee in 2001-2015 is the Schrader 20398. The valve stem is made out of rubber and black in color.
The valve stem can be removed from the sensor body and replaced with another black rubber valve stem.
Schrader 20398 fits the following Jeep models: 2013-2016 Wrangler
You can purchase the sensor here: http://www.tpms.com/Chrysler_Dodge_TPMS_56029398AB_56029398AA_6824106_p/s0398.htm