See also:

Onboard Diagnostic System — OBD II
Your vehicle is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions, engine, and automatic transmission control systems. ...

Ignition Key Removal
Automatic Transmission Place the shift lever in PARK. Turn the key to the ACC position and then push the key and cylinder inward slightly and rotate the key to the LOCK position. Then remove th ...

Powertrains
The all-new 2011 Jeep Grand Cherokee is available with two leading engine options for North American markets. The 2011 Jeep Grand Cherokee's standard engine is an all-new flexible fuel 3.6-liter ...