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90 GMC Sierra heating troubles

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WL
New User

Jan 12, 2007, 4:57 PM

Post #1 of 1 (1514 views)
90 GMC Sierra heating troubles Sign In
I have a 1990 GMC 1500 with 270,000 miles. The heater blower motor works but only at low volume. You can hear the motor change speeds but the volume does't increase. The same thing happens when the A/C is turned on. Anyone know how to fix this?

WL





 
 
 






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