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DRAINED BATTERY

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Old 10-08-2018, 12:43 PM
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Question DRAINED BATTERY

I have a 2004 GMC Tahoe . I only drive it occasionally maybe 2 times in a week . Sometimes when I use the Tahoe after sitting , the battery is dead or too low to start it . I put a new battery in and it still drains it . I can't find anything left on . I also had the alternator checked and it was okay . Any ideas where else to look ?
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Old 10-08-2018, 01:08 PM
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Do you know how to do a parasitic draw test? YouTube is your friend.....
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Old 10-09-2018, 11:12 AM
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Originally Posted by Tech II View Post
Do you know how to do a parasitic draw test? YouTube is your friend.....
Ill give it a try . Thank you
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Old 10-09-2018, 06:07 PM
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Is there any aftermarket anything installed on this GMC Tahoe?
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Old 10-10-2018, 03:43 PM
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No aftermarket but I noticed last night that when I shut the engine off and get out , the radio was still on . I waited several minutes thinking it was on a delay . it stayed on until I opened the door again .
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Old 10-11-2018, 01:25 PM
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That is retained accessory power....if the radio is on, and you turn the key to off, the radio will stay on....as soon as you open the door, RAP goes off, and so does the radio.......if you don't open a door and sit there, it will go off in a preset time limit by itself...
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Old Yesterday, 01:27 AM
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Originally Posted by Tech II View Post
it will go off in a preset time limit by itself...
I think this interval is 20 minutes.
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