2003 DeVille blend door heater/A/C

[tbuckit1]

Went to switch vent from dash to defrost and hear a clicking noise and also air doesn't come out defrost unless the air is switched to floor. Switch air to floor and it doesn't seem to change. Where is the blend door located. sound seems to come from center of the dash.

Any common problems with this blend door? Thanks in advance.

[gmtech1]

Originally Posted by tbuckit1

Went to switch vent from dash to defrost and hear a clicking noise and also air doesn't come out defrost unless the air is switched to floor. Switch air to floor and it doesn't seem to change. Where is the blend door located. sound seems to come from center of the dash.

Any common problems with this blend door? Thanks in advance.

Blend door...Mode door maybe? The one that switches from defrost to vent to floor? The actuator is about halfway up the left (drivers) side of the HVAC module assy/box. The drivers side temp actuator is also near there so be sure check the correct one. The door itself is inside the module. With your clicking noise I suspect you have a bad actuator.

[tbuckit1]

I agree, how is the dash pad removed? I've located the actuator however I think it will be somewhat simpler with the dash disassembled. Thanks in advance for your input.

[gmtech1]

Originally Posted by tbuckit1

I agree, how is the dash pad removed? I've located the actuator however I think it will be somewhat simpler with the dash disassembled. Thanks in advance for your input.

I would suggest getting a manual for this one, it's quite a job.