Battery drain on 2008 Chevy Tahoe

Asked by Clint Nov 22, 2020 at 02:21 PM about the 2008 Chevrolet Tahoe LTZ RWD

Question type: Maintenance & Repair

I bought a 2008 Chevy Tahoe LTZ.about 6 months ago. If I don't start it up at
least once every 12 hours or so the battery goes dead. I've replaced the
battery twice now, so I know it's not a bad battery.

I'm not leaving anything on. I have double checked that many times. I even
stopped locking it so the alarm wouldn't be on. Nothing works.

Any ideas?

3 Answers
3,340

Justin answered 3 years ago

 do you have a digital multimeter? It sounds like a parasitic drain, anything over 50 ma is considered parasitic drain....radio naturally has power constantly going to it for the clock...

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Guru9KQYMG answered 2 years ago

i have this same problem but it doesn't even have to be 12 hours... been into service I don't even know how many times now... Did you eventually get the problem fixed?

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NotAmechqnic1 answered 2 years ago

Hi I have a 2008 Chevy Tahoe ltz 5.3 flex fuel and I tested it with a meter and I'm drawing 1.40 MA is that two much ? And I pulled some fuses and the ones drawing are "abs 2" "air bag batt" and "L/gate RELSE" they each are pulling roughly 25-30 MA . PLEASE someone help me . Only light on is P parking assist light . No check engine no codes nothing

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