we have a 96 blazer that the sir WAS blowing out of the dash vents and was cold before we had the transmission replaced a few weeks ago. now it blows warm/heat out the defrost vents and the floor vents, but nothing blows out of the dash vents now. does anyone have any idea why?? we tested the relay for the a/c and that was not it. also the fuse for the a/c is fine. whats next? THANKS!!!!

 

*Moving to 2nd Gen Tech* - The Help & Suggestions Center is for forum (software) related questions. Technical questions are to be posted in the appropriate technical section. Please read the section descriptions and choose accordingly. Please do not further violate the rules of the forum by double posting the question in another forum section. A member of the staff will move the post for you. Thanks!

Sounds like the vacuum line to the HVAC system under the hood was left disconnected.

Does the A/C compressor kick on at all?