Operation CHARM
: Car repair manuals for everyone.
Hosted by
mcallihan.com
Home
>>
Chevy Truck
>>
1999
>>
Express 1/2 Ton Van V8-305 5.0L VIN M SFI
>>
Repair and Diagnosis
>>
Heating and Air Conditioning
>>
Description and Operation
>>
Heating and Ventilation
>>
Modes Description
>>
Vent Mode
Vent Mode
With the mode knob in the VENT position, the vent valve opens so air can flow to the instrument panel outlet ducts.