Originally Posted by maddmaxx65
my 1994 blazer started making a clicking noise from the right side under the dash when the air is on but goes away in about a minute and is fine until i shut the ignition off and it clicks for another minute and quits. Sounds like plastic hitting plastic _ any ideas as to what it is .
I'm having the exact same problem with mine. The clicking/banging is pretty loud and I can feel that it is coming from directly behind the blower motor. The clicking begins when I turn on the ignition, turn off the ignition, or switch on the AC, lasts for about 15 seconds, and then stops until the the ignition or AC is turned off.
Does anyone have a diagram or general instructions for replacing/fixing this vent door? Also, a diagram of the HVAC system would be really helpful.
I am also no longer able to get any air out of the dash vents. Is this the same problem or two separate problems? Defrost and floor vents work fine. Heat blend also works fine. Thanks for the help.