2002 GMC Sierra No Air after Blower Motor Resistor?

[Matthew Ridgaway]

Hi all,

 

With everyone on lockdown I finally got a chance to replace the blower motor resistor in my 2002 Sierra. Originally no air on 1 and 2 but worked fine on 3/4/5. I replaced the resistor with not too many issues but now I can hear the motor at all levels but no air is coming out of the front AC ports. There is air coming out of the defrost and side vents. It doesn’t feel like it’s getting cold. Any idea what’s wrong now?

[tlaw91]

Sounds like a mode door gone bad


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