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So slow in here/damn vent on defrost issue
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08-12-2014, 05:08 PM
glennf1
Hummer Veteran
Join Date: Nov 2011
Posts: 163
Re: So slow in here/damn vent on defrost issue
HVAC Servos won't throw a code. Try to pull the battery or fuse and recalibrate and if that doesn't work it looks like you'll have to replace it. They are known for going bad.
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