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Orifice Tube Location on Chevy Pickup

Question: Is the orifice tube on a 91' Chevy Pickup truck located in the evaporator, or the condenser?

All Chevy C/K series trucks built after October, 1989 should have orifice tubes located in the condenser outlet.  G.M. changed to a condenser mounted orifice to solve noise complaints.  Evaporator installed orifice tubes would cause a hissing sound as pressure equalized after shut down.

Visitor Comments
  1. Comment #1 (Posted by A Lopez)
    what direction should the orfice filter be installed?
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