Wife's feet are freezing!

[Sawlog]

We have a 1994 k2500. I have noticed the cab don't stay warm.
The other day my wife was with me and she said her feet were freezing.
Seems like a ton of outside air is coming in at the blower wheel air intake.
Do you all have this problem?

[sntrym95]

Your recirculating door is probably stuck open. You'll need to remove the fan and push it closed IIRC. The motor that controls it is probably bad as well so you'll likely need to replace that. A 1/4" air ratchet is really handy for that this job.