The 2001 Jeep Cherokee has overhead valves (OHV).
The 2007 Jeep Grand-Cherokee has single overhead cam (SOHC).
The 2002 Jeep Grand-Cherokee has overhead valves (OHV).
pre 2001 diesels and petrol engines were chain driven... cam belt change is not an issue
Chain
The 2001 Jeep Cherokee has overhead valves (OHV).
The 2001 Jeep Wrangler has overhead valves (OHV).
The 2013 Jeep Patriot has double overhead cam (DOHC).
The 2003 Jeep Wrangler has double overhead cam (DOHC).
The 2005 Jeep Wrangler has double overhead cam (DOHC).
The 2010 Jeep Compass has double overhead cam (DOHC).
The 2014 Jeep Wrangler has double overhead cam (DOHC).
The 2012 Jeep Compass has double overhead cam (DOHC).
The 2007 Jeep Patriot has double overhead cam (DOHC).
The 2014 Jeep Compass has double overhead cam (DOHC).
The 2006 Jeep Wrangler has double overhead cam (DOHC).
The 2014 Jeep Cherokee has single overhead cam (SOHC).