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Old 12-15-2013, 12:51 PM
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frenchy frenchy is offline
Dodge Ram Forum Newcomer
Join Date: Mar 2010
Location: London, ON Canada
Age: 37
Posts: 22
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: Sport
Color: Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Hi, I would start by trying all the fan speeds, if only a couple speeds work you need a "blower fan resistor" located near your fan blower or attached to the blower (usually under the dash passenger side). If nothing works,checked for 12V+ power (ignition ON and blower switch on any speed) at the blower connector, if you dont have power at all checked your fuse, if you do have power and nothing works unplug the blower connector and plug it back, sometimes the blower starts working again but it means it needs replacement anyways.
99% of the times it's either "the blower fan" or the "blower resistor", I've been a mechanic for 16years now and never had any wiring issues, sometimes the switch is defective but rarely.
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