Chain
Yes.
A 2012 Dodge Caravan would have the 3.6L V6. That engine has a timing chain which does not require replacement unless worn.
Yes
The 2012 Dodge Grand-Caravan has 24 valves.
The 2012 Dodge Grand-Caravan has a V6 engine.
The 2012 Dodge Grand-Caravan's turning circle is 39.1 ft..
The 2012 Dodge Grand-Caravan has double overhead cam (DOHC).
The 2012 Dodge Grand-Caravan has a 17.5 degrees angle of departure.
The 2012 Dodge Grand-Caravan has a 6-speed shiftable automatic.
The height of the 2012 Dodge Grand-Caravan is 5 ft. 7.9 in. (67.9 in.).
The 2012 Dodge Grand-Caravan has a 13.4 degrees angle of approach.
The maximum payload of the 2012 Dodge Grand-Caravan is 1540 lbs..