Blower running?
Instructor
Joined: Jun 2015
Posts: 178
Likes: 34
From: Calgary Alberta
It is supposed to. The fan is always running, regardless of the climate control settings (fan speed/vent selector), if the key is in the On position (and I believe Accessory too).
I couldn't tell you why Chevy made that choice though. To make sure there was some fresh air in the cabin??
I couldn't tell you why Chevy made that choice though. To make sure there was some fresh air in the cabin??
Drifting
Joined: Aug 2019
Posts: 1,339
Likes: 225
The fan on '81;s run on a very low speed for air circulation. If it bothers you, you can disconnect the low speed wire at the relay. That's what I did with mine. It keeps it a lot cooler when the A/C is not on.
Last edited by Mrvettenick; Feb 16, 2020 at 02:00 PM.
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
Why do you want to disable a safety feature? GM made their blower motors run at a low speed at all times in order to provide a slight positive cabin pressure due to a carbon monoxide problem on GM cars. By running the fan on low, you will not get carbon monoxide poisoning and die. GM got sued because this did, in fact, happen. Why don't you cut those pesky seat belts out of the car while you're at it..? 
Lars
Lars
Last edited by lars; Feb 16, 2020 at 11:01 PM.
