Notices
General Tech Good at troubleshooting? Have a non-specific issue? Discuss general tech topics here. IF YOUR QUESTION IS SPECIFIC TO A CERTAIN MODEL, IT DOES NOT GO IN THIS SECTION.

06 Chevy cobalt hvac problem

Thread Tools
 
Search this Thread
 
Old November 5th, 2016, 6:58 AM
  #1  
CF Beginner
Thread Starter
 
Jason Wright's Avatar
 
Join Date: Nov 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Default 06 Chevy cobalt hvac problem

I have no power to blower motor. I have checked all relays and fuses still no power. I have ran a jumper wire and blower runs so its good. my question is if I should have consist power to the actual fan speed switch on the dash and what wire should be positive?
Old November 5th, 2016, 9:44 AM
  #2  
Super Moderator
 
tech2's Avatar
 
Join Date: Mar 2011
Posts: 9,165
Received 511 Likes on 471 Posts
Default

what engine, auto or manual hvac
Old November 5th, 2016, 9:56 AM
  #3  
CF Beginner
Thread Starter
 
Jason Wright's Avatar
 
Join Date: Nov 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Default

2.2 auto
Old November 5th, 2016, 10:14 AM
  #4  
Super Moderator
 
tech2's Avatar
 
Join Date: Mar 2011
Posts: 9,165
Received 511 Likes on 471 Posts
Default

does the blower motor brown wire have 12v with the key in run
Old November 5th, 2016, 10:22 AM
  #5  
CF Beginner
Thread Starter
 
Jason Wright's Avatar
 
Join Date: Nov 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Default

No brown wire orange and black goes straight to blower motor . But neither have power. I ran a jumper straight to orange and it runs. I would say I have a short in the wire but I unplugged the harness at the back of the fan speed switch and no power there either so I didn't no if I should have a consistent power supply there and it turns on with the switch .
Old November 5th, 2016, 10:44 AM
  #6  
Super Moderator
 
tech2's Avatar
 
Join Date: Mar 2011
Posts: 9,165
Received 511 Likes on 471 Posts
Default

my diagram shows brown power feed and orange grd.

with the fans switch on high setting, the orange wire should be direct to grd. Is that the case.

if there is no power on the other wire, check the bcm fuse 3 fuse in the under hood fuse block.




All times are GMT -5. The time now is 3:14 PM.