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Chevrolet 3500 Pickup Problems

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

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.

(11 people reported this problem)

Chevrolet 3500 Pickup Vehicles With This Problem

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Average mileage: (–)
11 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000
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Brake problem? Or maybe a faulty head gasket cylinder?
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