You have 4 relays that control the doors on your front vents. Open the glove box and depress the side to expos? the area behind it. There are 4 square damper controls there place the front A/C to vent and tap on them sometimes they get stuck mid cycle. If you believe they are bad, go to the junk yard and pull replacements. These tend to be expensive at the dealer. If this works you know where the problem lies and you can then buy new ones at the dealer. Good luck hope this helps.
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You have 4 relays that control the doors on your front vents. Open the glove box and depress the side to expos? the area behind it. There are 4 square damper controls there place the front A/C to vent and tap on them sometimes they get stuck mid cycle. If you believe they are bad, go to the junk yard and pull replacements. These tend to be expensive at the dealer. If this works you know where the problem lies and you can then buy new ones at the dealer. Good luck hope this helps.