Flashing lights on and off all night - Chevy and GMC Duramax Diesel Forum
11-16 LML Performance Parts Discussion Discussion of Performance Parts For the 2011 to 2016 LML Duramax Trucks No Advertising

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post #1 of 5 (permalink) Old 10-12-2019, 09:34 AM Thread Starter
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Flashing lights on and off all night

16 LML, for the past week my truck is being flickering lights on and off ( on its own ), I noticed the other morning that it sounded like the battery was weak but no issues, now this morning the truck won’t start, dead batteries, could this be an internal short?
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post #2 of 5 (permalink) Old 10-12-2019, 02:08 PM
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Sounds like something is shorting out causing a draw on your battery and your lights to flicker. Most likely, the same problem causing both. Now, you just have to figure out where it is. Hopefully, the problem will be continuous so you can troubleshoot while it's happening. So hard to find when it jappens just once in a while.

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post #3 of 5 (permalink) Old 10-12-2019, 08:49 PM Thread Starter
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Found the battery on the back is leaking acid next to the pole, I guess time for new batteries, any suggestions, my truck is a 2016, don’t think they will be covered under warranty.


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post #4 of 5 (permalink) Old 10-13-2019, 07:40 AM
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Quote:
Originally Posted by MiamiMax View Post
Found the battery on the back is leaking acid next to the pole, I guess time for new batteries, any suggestions, my truck is a 2016, don’t think they will be covered under warranty.


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Suggestion...........Replace BOTH, or the old one will draw down the new one and they will both fail.
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2008 Silverado 2500HD CCSB LTZ Diesel
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post #5 of 5 (permalink) Old 10-13-2019, 07:54 AM Thread Starter
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Thank you, I will, just ordered 2 of the AGM 850cca 1000 ca, I was reading and these are supposed to be good batteries, thank you for the advice.


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No engine mods... yet. Hauls a 20' Enclosed Motorcycle Trailer.

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2004 Dmax (gone)
2005 Dmax (gone)
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