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2003 chevy: LT..cranked..the vents, checked compressor its cycling…

Customer Question
my truck is a 2003...
my truck is a 2003 chevy LT extended cab with 5.3 motor. Air conditioner worked fine this morning on my way to work, got off work cranked truck and nothing came out the vents, checked compressor its cycling as it should but still nothing out the vents. checked belts, and only found where condenser is mounted on firewall that there are two plugs that come out wiring harness and only one plugged in! tryin to see if that maybe my problem and to where the other plug may go.. i have looked everywhere and can't find it!
Submitted: 8 years ago.Category: Chevy
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Answered in 8 minutes by:
6/25/2010
Chevy Mechanic: ZZDaryl, Chevy Technician replied 8 years ago
ZZDaryl
ZZDaryl, Chevy Technician
Category: Chevy
Satisfied Customers: 12,551
Experience: 28 year experience, Master Mechanic
Verified
I would suspect the blower motor if no air is coming out the vents, many times if you tap on the motor it will begin to run again but it will need to be replaced sometime. The blower motor is below the right side of the dash, there may be a plastic panel that needs to be removed to get to it.
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Customer reply replied 8 years ago

tried and nothing happend and also checked the resister. it has no power comin in something electircal

 

Chevy Mechanic: ZZDaryl, Chevy Technician replied 8 years ago
If there is no voltage at all to the resister I would check the blower fuse in the under hood fuse box, this fuse should supply voltage to the resister at all times.
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