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GMC Truck
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1994
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G 3500 1 Ton Van V8-350 5.7L
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Repair and Diagnosis
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Heating and Air Conditioning
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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Preliminary Checks - HVAC
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Blower Controls
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Blower Controls - Rear Auxiliary
Blower Controls - Rear Auxiliary
Before proceeding to the system diagnosis perform the following visual inspections.
1.
Check to see that AUX HTR A/C Fuse is not blown. If fuse is blown, locate and repair source of overload.