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Chevrolet Silverado 3500 Problems

Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Chevrolet Silverado 3500

Problem Description and Possible Solution

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.

(8 people reported this problem)

Chevrolet Silverado 3500 Vehicles With This Problem

RepairPal Verified
Average mileage: 150,666 (123,000–202,000)
4 model years affected: 2001, 2002, 2003, 2004
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Brake problem? Or maybe a faulty head gasket cylinder?
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Viewing 1-1 of 1 comments
If u switch from a/c to heat or vis- versa the heat or a/c stay on when you want the other if i shut off motor an cool it for several minutes upon restart the heat- a/c you wanted starts.