Low side is in back on firewall next to two heater hoses. It has black cap on it. The high side is in front behind wiper fluid fill. Do not use that one to fill. Use a gauge to check pressure. Then pull vacuum to evacuate all air for thirty minutes at least. Make sure it stays in vacuum. If system has a leak fix it first. Then add proper amount of 134a charge. Dual front and rear A/C 2008 Caravan is about 40 oz. It is 2.44 lbs, front only is 1.75 lbs.
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Tuesday, April 12th, 2011 AT 2:17 PM