Installation Stage 3: Air-conditioning Adjustment - Bumper Installation Version Only
NOTE – IN SOME HOTTER CLIMATES, A SMALL ADJUSTMENT TO THE AIR-CONDITIONING SYSTEM MAY BE REQUIRED. THIS MAY BE NECESSARY BECAUSE ALL OF THE HEAT FROM THE ENGINE OIL COOLER IS NOW BEING DUMPED IN FRONT OF THE CONDENSER. THE SMALL ADJUSTMENT OUTLINED BELOW WILL COMPENSATE FOR THIS CHANGE.
1. Reclaim the refrigerant from the AC system in accordance with local and EPA regulations.
2. Remove the OE orifice tube and replace with a GM white orifice tube (Four Seasons Part# 38623).
3. Evacuate and recharge the AC system with an additional 6oz of refrigerant (more than the OE specified amount). Test drive at highway speeds and add up to an additional 12oz of refrigerant as needed.