Silverado, Sierra & Fullsize Pick-ups The Silverado & Sierra have been two of the best selling trucks in the US for decades, and is truly proven to be "like a rock".

2014 Chevy Silverado
Platform: Truck, GMT 400, 800, & 900

AC problems

Thread Tools
 
Search this Thread
 
Old July 26th, 2011 | 2:21 PM
  #1  
ah21283's Avatar
Thread Starter
CF Beginner
 
Joined: Jul 2011
Posts: 17
Likes: 0
Exclamation AC problems

my ac only blows air when i get driving about 40, if im at a red light i get no airflow. any ideas what could be wrong?
Old July 26th, 2011 | 10:41 PM
  #2  
RacerX's Avatar
CF Veteran
 
Joined: Aug 2010
Posts: 1,054
Likes: 5
From: New York City USA
Default

have you checked the base of the windshield for debris that is cluttering the air intake?
Old July 26th, 2011 | 10:54 PM
  #3  
ah21283's Avatar
Thread Starter
CF Beginner
 
Joined: Jul 2011
Posts: 17
Likes: 0
Default

yeah, thats not it. im leaning toward the blower motor being broke
Old July 26th, 2011 | 10:56 PM
  #4  
RacerX's Avatar
CF Veteran
 
Joined: Aug 2010
Posts: 1,054
Likes: 5
From: New York City USA
Default

if the blower motor didnt work you wouldnt be getting any airflow at all at any speed. Your problem is either restricted airflow into the plenum or lack of vacuum needed to draw open the blend doors.
Old July 26th, 2011 | 11:24 PM
  #5  
ah21283's Avatar
Thread Starter
CF Beginner
 
Joined: Jul 2011
Posts: 17
Likes: 0
Default

its not much air flow, just enough to feel.
Old July 27th, 2011 | 3:56 PM
  #6  
Chevrolet Customer Service's Avatar
Official GM Rep
 
Joined: Mar 2010
Posts: 4,163
Likes: 25
From: Global Headquarters in Detroit, MI
Default

ah21283,

I am sorry to hear that you are experiencing this issue. Have you had this issue diagnosed at your local Chevrolet dealership?

Thank you,
Elizabeth, Chevrolet Customer Service
Old July 28th, 2011 | 6:50 AM
  #7  
RacerX's Avatar
CF Veteran
 
Joined: Aug 2010
Posts: 1,054
Likes: 5
From: New York City USA
Default

do you hear the blower motor fan in all of its settings? from low to high? if you cannot hear it it may NOT be blowing OR the resistor block may be toast.
Old July 28th, 2011 | 12:31 PM
  #8  
ah21283's Avatar
Thread Starter
CF Beginner
 
Joined: Jul 2011
Posts: 17
Likes: 0
Default

i hear nothing from 1 to 5. thats why i think its the blower motor
Old July 28th, 2011 | 12:34 PM
  #9  
ah21283's Avatar
Thread Starter
CF Beginner
 
Joined: Jul 2011
Posts: 17
Likes: 0
Default

is there any way to know if its the resistor? or do i just have to buy a new one and see?
Old July 28th, 2011 | 1:57 PM
  #10  
kevinkpk's Avatar
CF Monarch
 
Joined: Jul 2011
Posts: 5,916
Likes: 138
From: kevinkpk
Default

Originally Posted by ah21283
is there any way to know if its the resistor? or do i just have to buy a new one and see?
What I'd suggest is apply 12 volts directly to the motor, if it dosen't come on, either the motor or a ground issue


Quick Reply: AC problems



All times are GMT -5. The time now is 6:23 AM.