Q: HVAC problem on 2007 GMC Yukon Denali

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
While both sides are calling for cooling, the drivers side cools while the passenger side heats (blasts hot air)
(1) Answer
This could be the HVAC module, I've heard some are being reprogrammed if one side is not functioning properly. This should be covered under your basic warranty if it hasn't expired.