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Q: Heating A/C and Daytime Running Lights on 2001 GMC Yukon Denali

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The rear heater and AC work fine but the front vents seem blocked as no air comes out at all, how and what do I check for?
(1) Answer
the front blower/heater fan motor may not be working. check fuse and then see if there is power to it which is a little difficult.