Question about 1999 Chevrolet Suburban

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2003 suburban rear air works fine but won't blow heat.

The fan works fine on all speeds & blows ice cold air. It will not blow warm air at all.

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This problem is caused by what is called the air temp control blend door, either the door is sticking in the duct or the electric actuator that moves it is defective, the actuator is the common part that fails, the bad news is the dash assembly must be removed to replace the parts.

Posted on Feb 11, 2009

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