You should NEVER fix brakes on only one side. -Find the problem and fix all. It is not difficult to check all pads or even to replace all pads and rear shoes if necessary. If you can not do this, then take it to a brake shop. This is important servicing, -your life depends on it.
A Grand Caravan does not have a timing belt.
It depends on what type they are, but a rough estimate is about thirty to fifty dollars without the rotors. If you need rotors, it will cost $100 plus.
The 2013 Dodge Grand-Caravan's engine produces 260 ft-lbs. @ 4400 rpm.
The 2012 Dodge Grand-Caravan's engine produces 260 ft-lbs. @ 4400 rpm.
The 2010 Dodge Grand-Caravan's engine produces 205 ft-lbs. @ 4000 rpm.
The 2001 Dodge Grand-Caravan's engine produces 210 ft-lbs. @ 4000 rpm.
The 2005 Dodge Grand-Caravan's engine produces 210 ft-lbs. @ 4000 rpm.
The 2007 Dodge Grand-Caravan's engine produces 200 ft-lbs. @ 4000 rpm.
The 2011 Dodge Grand-Caravan's engine produces 260 ft-lbs. @ 4400 rpm.
The 2014 Dodge Grand-Caravan's engine produces 260 ft-lbs. @ 4400 rpm.
The 2008 Dodge Grand-Caravan's engine produces 205 ft-lbs. @ 4000 rpm.
The 2009 Dodge Grand-Caravan's engine produces 205 ft-lbs. @ 4000 rpm.