,01 Sonoma 2.2 SL battery runs down


Asked by Nov 24, 2013 at 07:40 PM about the 2001 GMC Sonoma SL Short Bed 2WD

Question type: Maintenance & Repair

Went through 4 battery so far, they work for month or so then get weak then soon just
wont turn engine over, tried diff battery from diff place, I turn every switch off I havethat
takes power, starts fine thu the day but over night dead, Could it be the battery run down
protection is doing the opposit that its post to? I,m at a loss.

1 Answer


Usually is the radio. Easy way is to use a small bulb like a peanut bulb or marker light bulb, bend tabs out. Disconnect negative battery connection, make sure all power is off, then put bulb inline with battery negative. Wait about 5 mins or so and there should be no light. Start pulling fuses. On some we do a voltage drop test on the fuse. As to not wake up a module.

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