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Old 03-15-2021, 04:57 PM   #1
GhostOutlaw
 
Drives: Black 2011 2LT/RS
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Daily Dead Battery

I have something draining my battery and no one seems to be able to find it.

3 new batteries, a new alternator and I still come out to a dead battery every other day.

WTF is draining my battery and why can 3 mechanics not figure it the **** out?

I need a real solution or I'm actually going to have to buy a new car over what's probably a $5 issue.

Anyone any thoughts?
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Old 03-15-2021, 05:21 PM   #2
gtstorey

 
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There has been some discussion on here of a bluetooth phone trying to pair after the car has been cutoff draining the battery.
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Old 03-15-2021, 05:24 PM   #3
GhostOutlaw
 
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My bluetooth has been acting funny lately, often freezing up.

My trunk button also no longer works.
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Old 03-15-2021, 06:12 PM   #4
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The Telematics Communication Interface Control Module can be an issue.
In the Instrument Panel fuse block you can pull fuse 14 (onstar) and see if that makes a difference. There's a ton of things that can drain a battery. I use a low amp probe to check the milliamp draw. A lot of shops shy away from battery draw issues.
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Old 03-16-2021, 07:19 PM   #5
Supreme23
 
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like Mouse330 said there are a bunch of things that can drain a battery. at this point after going through 3 something is eating through them - you just have to go one by one and find out what is drawing what. have to probe for something because there is something drawing thats killing those batteries.
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Old 03-17-2021, 10:53 AM   #6
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Quote:
Originally Posted by GhostOutlaw View Post
WTF is draining my battery and why can 3 mechanics not figure it the **** out?

Find a more thorough and reliable mechanic. Electrical issues on cars in this generation can be a beast to diagnose, so it's my understanding that most mechanics are just looking for a quick-fix patch job and praying rather than systematically diagnosing current/voltage at fuses, relays, etc.
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Old 03-17-2021, 11:56 AM   #7
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my buddy had a similar problem in his truck. A wire's sheathing had rubbed off and was making contact with the chassis
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Old 03-17-2021, 11:59 AM   #8
gtstorey

 
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Quote:
Originally Posted by Army of Wuzzy View Post
my buddy had a similar problem in his truck. A wire's sheathing had rubbed off and was making contact with the chassis
Judging by other issue with the trunk release button not working, I would check the wiring harness going into the door if you can't narrow it down with pulling fuses.
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Old 03-17-2021, 08:19 PM   #9
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Quote:
Originally Posted by Army of Wuzzy View Post
my buddy had a similar problem in his truck. A wire's sheathing had rubbed off and was making contact with the chassis
^^^^ This, I have seen where the cables from the battery to the front of the car had worn thru somewhere along the line and was grounding out and draining the battery. Find a shop that will, or can do a voltage load test on BOTH cables.
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Old 03-22-2021, 07:54 PM   #10
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My friends Porsche has an electrical draw somewhere. I sent him a video from The Car Wizard on YouTube. Pretty detailed and straightforward way to find draws in your cars electrical system. Definitely worth a view. Hope this helps.
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