One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.Google+
Car Problem Reports
Chevrolet Suburban 1500 Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail
Chevrolet Suburban 1500 Problem
Average Mileage: 123,778 mi (36,000 mi - 250,000 mi)
Visitor, 2004 Chevrolet Suburban 1500, 98,000 mi
Actuator door quit working and would only blow hot air on driver side and cool air on passagner side when in ac mode.
Visitor, 2001 Chevrolet Suburban 1500, 180,000 mi
no heat from the front, but rear heat works great.
Visitor, 2004 Chevrolet Suburban 1500, 145,000 mi
A/C and heat not putting out right temperatures, actuator making sounds. Replaced acctuator
Visitor, 2004 Chevrolet Suburban 1500, 41,000 mi
had ac on and driver side started blowing extremely hot air
Drivers side a/c switches to heat, while passenger side blows cold.
Replaced drivers side door actuator, did not fix problem.
Turning the a/c off then shutting off car and restarting will reset all doors and actuators, fixing the problem temporairly.
Visitor, 2005 Chevrolet Suburban 1500, 105,000 mi
Cooling only works on upper setting. The heater will only work when the car RPM are increased and will not heat the back vents at all. There is a continuing clicking sound coming from the dashboard.
Visitor, 2001 Chevrolet Suburban 1500, 85,000 mi
replaced door actuator
Visitor, 2001 Chevrolet Suburban 1500, 170,000 mi
front heat blows cold
Visitor, 2004 Chevrolet Suburban 1500, 138,584 mi
AC works fine for around 20 to 25 miles then it will switch to hot on the drivers side of the dash.
Will attempt repair by replacing the drivers side actuator.
Visitor, 2005 Chevrolet Suburban 1500, 250,000 mi
is stuck on heat or cold seems to change when it wants to but not by the control assembly.