Need some help diagnosing a new problem that arose yesterday. Was driving my truck and noticed the blower for the climate control wasn't working. No air would come out, regardless of the fan speed setting or any other setting. Started researching possible causes and solutions on here but then later when I drove my truck again it was working as normal. Has anyone experienced this before. Is there a part that might be on its last legs that I should replace now?

 

Probably the blower motor regulator.

 

Thanks, I kind of hope so. Looks like it's easy to replace and not too expensive!