No High when A/C is on

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Jul 12, 2010 | 04:15 PM

Harmon

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Junior Member

Joined: Jul 2010

Posts: 3

No High when A/C is on

I have replaced high blow relay- not fixed

Cleaned/checked ground to cowl above blower motor- not fixed

checked 20 amp fuse in fuse block under dash- not fixed

anyone have another suggestion for me?

Jul 12, 2010 | 04:21 PM

Mr_Shamrock

Chevrolet/GMC, Racing, Recreational Forum Moderator

Joined: Apr 2009

Posts: 2,267

It is probably your blower resistor.

Jul 12, 2010 | 04:48 PM

Harmon

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Junior Member

Joined: Jul 2010

Posts: 3

where is that located?

Jul 12, 2010 | 04:54 PM

Mr_Shamrock

Chevrolet/GMC, Racing, Recreational Forum Moderator

Joined: Apr 2009

Posts: 2,267

I am not sure what year truck you have but they are usually under/behind the glovebox. There is a service bulletin for some of the newer trucks.

Jul 12, 2010 | 05:11 PM

Harmon

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Joined: Jul 2010

Posts: 3

It is an 1986 Chevy Silverado...

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