I haven't driven my blazer much, but whenever I try and start its as if there is 0 charge in battery. When I turn the key no dash lights turn on, and I can't even use the power locks. I just replaced the battery and the alternator about 2 months ago.

I'm guessing there's some kind of ridiculous battery drain on it, but I can't figure out what it could be. I've had a 550 watt amp connected for about 5 years and I've never had this issue. AAA came and it started right up just fine and ran no problem with around 13 - 14 volts. But... the next day it was completely dead again.

Any ideas on what could be draining my battery? If I went to autozone could they test it to see what is draining my battery?

thanks

 

finding a battery drain can be tough. After you jump and get it started does it stay charged rest of the day ? Will it start the next day without jumping ? You can try to isolate the problem by pulling one fuse at a time. Did you have the problem before changing the alternator and battery ? If not, it could be a bad battery. I would take the battery to a-zone and have them charge and test it.

 

I've had the same issue on other Chevy vehicles so I knew what to look for on my blazer I have now. Next time its dark and ur in your blazer and if you have vanity mirrors in your visors a lot of times they never shut off even tho they are up I guess sometimes the pin breaks or sticks and the light stays on killing the battery and if there folded up you would never see the lights on

 

I have had a bad battery do this. It was particularly tough becouse it would go ok if it was driven frequently--but a couple days in the garage and no start...shop would test it (couple times) and said it was good then I said just replace it and no problem since.

Also, check for underhood light--I have had that get me before on an old Buick.

 

*Moved to Lighting & Electrical"

 

When I replaced the battery/alternator it worked fine for about a month. Then when I used it less frequently it started doing this. I havent tried starting it the same day but yes, its dead the next day. I could see it being one of those but I may have to test the fuses. I'll let you guys know.

Thanks

 

http://www.youtube.com/watch?v=KF1gijj03_0

this link is awesome.

 

Just get in the habit of yanking off the negative cable every time you park for the night!

Definitely have auto zone or wherever test the battery and alternator both. If both test ok, then you get to search and find out what's staying on. One fuse at a time.

 

lol i was going to say vanity mirrors also... been there! removed bulbs! chevy passenger vanity has broken in every blazer and the malibu i own!

 

Vanity mirror here too.. I wedge something in between the switch on the visor and the headliner to shut it off.