88-91 92 93 94 95 96 GMC CHEVY SUBURBAN SILVERADO CLIMATE CONTROL REAR DEFROST

what's going on everybody yesterday in my 1990 chevy k-1500 the air conditioning all of a sudden became stuck on exhaust vents and it was blowing cold ac air as it should but it was only coming out of the exhaust i'm sorry out of the defrost no matter what buttons i push down here and this happened to me on my jeep wrangler and an o3 jeep wrangler a few years ago that had the same problem however those style uses uh vacuum lines to actuate the vents whereas these trucks i believe 1988 to 1997 possibly only use electronic servos to move the various dampeners and whatnot when you push the buttons on the dashboard over there so all kinds of stuff online of course about this sort of thing here's what i found though underneath underneath the dash here just above your accelerator pedal have a look there there all these little arms and things if i can get a good good view for you see all these