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Search Auto Parts Search 2003 sierra Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> AC Auto Repair Help Forum jtw3 User Jan 10, 2010, 9:19 PM Post #1 of 5 (1885 views) 2003 sierra Sign In 2003 gmc sierra, 5.3L, in the fuse box under the hood in positions 1-5 there are oversize fuses. what is the fuse marked AIR? also it have been cold here in the south and heater is blowing cool air. i have replaced the thermostat and the truck heats up to normal around 195. the air is was still cool. today the climate control fan switch quit working. i've checked all the fuses and they are good. Could it be the blower motor, relay or the switch itself? steve01832 Veteran Jan 11, 2010, 6:47 PM Post #2 of 5 (1875 views) Re: 2003 sierra Sign In jtw, I have moved this thread to heating or a/c issues to hopefully get more views. Steve Tom Greenleaf Ultimate Carjunky / Moderator Jan 12, 2010, 11:09 AM Post #3 of 5 (1872 views) Re: 2003 sierra Sign In >>oversize fuses. << Can you spell STUPID? T steve01832 Veteran Jan 12, 2010, 5:53 PM Post #4 of 5 (1863 views) Re: 2003 sierra Sign In LOL. I think he may be referring to MAXI fuses here. At least I hope so. Steve Tom Greenleaf Ultimate Carjunky / Moderator Jan 12, 2010, 7:40 PM Post #5 of 5 (1856 views) Re: 2003 sierra Sign In Watching?? T   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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