I have trail blazer 2003 while i am driving up to the mountain my a/c start to blow hot air ,i changed the fan cluth and the high pressure sensor and still the same problem.while driving on the highway i have no problem with my a/c all the way but when i start going up it start to blow hot air
Have you had someone install gauges to see if it is at the right level, since you have replaced the fan clutch it sounds like it might be a little low on freon.
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Yes the freon is on the right level,does the a/c radiator make this problem?