Problem Reports
GMC Sierra 1500
Report: Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail
GMC Sierra 1500 Problem
Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004
Average Mileage: 122,517 mi (63,000 mi - 199,589 mi)
One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.
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zoocrew, 2004 GMC Sierra 1500, 130,000 miRookie
A/C only cold on passenger side. Drivers side blows hot. There is no adjustment on the drivers side for temp. If you turn off the truck and then restart, it might work for a bit or not.
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Visitor, 2001 GMC Sierra 1500, 75,000 mi
Can't change heating/a/c temp unless I shut down truck and reset to desired temp and restart, then it goes to correct temp
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Visitor, 2000 GMC Sierra 1500, 199,589 mi
i have problems when i u the air or heater.i have to shut the car off for half hour before i can u the other
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Visitor, 2000 GMC Sierra 1500, 145,000 mi
textbook problem like all others. Temp. adjuster knob when turned to cold would only blow hot all the time. Actuator is at fault.
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Visitor, 2003 GMC Sierra 1500, 63,000 mi
heat only at 90 deg.
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