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What could it be draining my battery

Tiny
RACAD
  • MEMBER
  • 2004 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 197,000 MILES
The other day I was out driving and using the air conditioner a lot when I got home I shut my vehicle off then the next day it would not crank, bought a new battery it started right up. Then two days later when to go run errands and it would not do anything. I noticed last night after charging the battery and stating the truck and then shutting it off the back seat on the roof inside the vents were blowing air. My spouse and I took out the air conditioner relay and fuse and it still did it, along with if you push the button for fog light all my lights inside truck go away. I also smelled rubber burning for like thirty seconds the day before it died. What is wrong with it? What is draining the battery? I am desperate I have doctor appointments and my spouse works all day.
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Tuesday, July 26th, 2016 AT 4:28 AM

13 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is a tsb on this so call a dealer they may fix it for free. See picture for number to give to dealer they may install a new harness from control to resistor. It melts together after time and does what you are experiencing.
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Tuesday, July 26th, 2016 AT 5:52 AM
Tiny
RACAD
  • MEMBER
  • 8 POSTS
Okay. Thank you and this would cause a brand new battery to drain?
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Tuesday, July 26th, 2016 AT 5:53 AM
Tiny
RACAD
  • MEMBER
  • 8 POSTS
Also, I bought it from a used car dealership so should I call them first?
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Tuesday, July 26th, 2016 AT 5:54 AM
Tiny
RACAD
  • MEMBER
  • 8 POSTS
According to my VIN number there are no recalls?
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Tuesday, July 26th, 2016 AT 6:12 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It is not a recall it is a campaign. Check with dealer and yes if it will not shut off it will drain a battery in no time. Pull hvac or blower fuse to try to stop it. One inside car other under hood.
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Tuesday, July 26th, 2016 AT 6:15 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
No call a Chevrolet dealer not a used car dealer, but the harness and resistor is problem.
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Tuesday, July 26th, 2016 AT 6:19 AM
Tiny
RACAD
  • MEMBER
  • 8 POSTS
Okay, I just pulled hvac and blower fuse and air is still coming from vents. Frustrating.
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Tuesday, July 26th, 2016 AT 6:46 AM
Tiny
RACAD
  • MEMBER
  • 8 POSTS
No I bought it at a used car dealership. I just used a multi-meter and it showed the rear hvac fuse was making the air come through the vents. I pulled the fuse going to wait an hour and see if the vehicle starts.
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Tuesday, July 26th, 2016 AT 7:54 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If it is coming through the front vents rear hvac will have no effect look down by the blower on pass side and disconnect either the resistor or blower.
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Tuesday, July 26th, 2016 AT 12:09 PM
Tiny
RACAD
  • MEMBER
  • 8 POSTS
It was coming from the back seat ceiling vents and there was a lot of blowing noise coming from way in the back under the panels passenger side. Since removing the number 30 fuse it has stopped blowing from vents, but there is a noise up front under glove box. There is one plug I cannot pull the other plug looks good, but I can feel the noise coming from that area. I am not sure if it is the blower or the resistor or I am wondering if it could be airflow mode actuator.
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Tuesday, July 26th, 2016 AT 12:53 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If the key is off it should not be the actuator.
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Tuesday, July 26th, 2016 AT 1:10 PM
Tiny
RACAD
  • MEMBER
  • 8 POSTS
Okay, thank you for ruling that out. If I put the 30 fuse back in and shut the vehicle off it will blow air through ceiling vents so it could still possible be the actuator right?
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Tuesday, July 26th, 2016 AT 1:14 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
No it would be the blower or something wrong in front causing the back to work. If you go to www. Gmpartsdirect you can find the harness and resistor it is a little over a hundred and fifty dollars to fix the harness if you choose to do it your self. You should really have a mechanic scan for codes as it may be a module that is calling to keep the blowers on as well.
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Tuesday, July 26th, 2016 AT 2:56 PM

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