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Old 06-24-2011, 06:01 PM
EMB1230 EMB1230 is offline
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Default Blower Motor Resistors

Anyone else had one wear out on your truck? my '03 with only 50K needs one already. Speeds 1,3,4 work fine but not 2. Took the resistor out and yep one of the contacts is rusted and corroded. Hopefully I just have to replace the resistor and not also the harness, that would SUCK!!
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Old 06-24-2011, 11:10 PM
north44 north44 is offline
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Default Re: Blower Motor Resistors

All kinds of crud and moisture manages to accumulate where the resistor is located - no surprise that it manages to rust out and/or otherwise fail.

A friend has an auto parts store and they keep all kinds of blower motor resistors in stock - it's a common failure point on any number of automobiles.

Usually the first sign of failure is only one speed working (usually "high") on your blower fan.

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BTW, while you're in there changing the resistor, use lots of dielectric grease on the connector, and for good measure, you may want to consider siliconing the heck out of any entry points for moisture along the harness.

Also, you may want to periodically check up on how much crud is building up in there - it's not all that difficult to get to - it just takes a bit of time.
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