Intermittent Electrical Issue

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Ben2019LS

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My 2019 Tahoe just started doing the same thing. Sat for a week or 2 due to Covid and I had the doors open a bit while doing the window trim blackout. Thought it was just the doors being open a lot and not being driven. I drove it 5 miles to Publix turned it off and then it was dead. A friend came by and jumped me and I went to Auto Zone where they said the battery was fine. Parked it at home and it has been hard to start or barely starts each time. Gauge reads 14-15 while running. Maybe I need to have the battery checked again?
 

Big Mama

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You may want to take her for a good long spin to see if that charges it back up. If not get it load tested.
 

PG01

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My 2019 Tahoe just started doing the same thing. Sat for a week or 2 due to Covid and I had the doors open a bit while doing the window trim blackout. Thought it was just the doors being open a lot and not being driven. I drove it 5 miles to Publix turned it off and then it was dead. A friend came by and jumped me and I went to Auto Zone where they said the battery was fine. Parked it at home and it has been hard to start or barely starts each time. Gauge reads 14-15 while running. Maybe I need to have the battery checked again?

Newer cars and trucks depend so much on a fully charged battery that can handle the electronics, computers, etc... with the key off...a battery that is weak or has a bad cell will wreak havoc on the vehicle.
Get a new battery and make sure it’s fully charged before installing, ive had batteries go bad in 1 year or last for 7 years.... luck of the draw imo.
 

Ben2019LS

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Thanks for the info guys, I ended up getting an AGM battery from Advanced Thursday after driving there and it not starting and testing bad. Worked Saturday and was busy Sunday but she fired up no problems this morning. See how it goes with some more driving the next few days.
 
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