回答“2005 Chevy Silverado 1500 5.3L: Passenger AC/heater vents blows hot”If just one side blows hot then check the blend door. Should be under dash on passenger side. First you should try to reset it by turning ac on and turning both dials all the way up to 90 and wait for it to get warm, should take 30 seconds and then turn them both back to 60. Do this about 3 times and it should reset it. If that doesn't fix it then check fuses.