Question about 1996 Chevrolet Blazer

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1996 blazer battery draining

I have a 1996 blazer and the battery works with a jumpstart and i can start the car right away. but it will lose the charge overnight. the light on the inside of the car would never go out so i took the light bulb out of it, im not sure if the power still goes there or not. the alternator was checked and it works fine and its a new battery.

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I had this problem on my 96 blazer, it turned out to be the timer that turns off the interior lights after 15 seconds, it would turn off the lights but not all the way, it would sit and drain the battery.. an easy way to test for an open circuit yourself:

  • Connect one end of the test light to the negative terminal of the battery, and the other end of the test light to the end of the negative battery cable, so that the light is now "inserted" into the circuit between the cable and the battery.
  • Step 3 Check the intensity of the test light. A faint glow is normal and indicative of the small current used to power the cars computer and clock. A bright glow means you have a significant battery drain that needs to be repaired.
  • Step 4 Leave the test light in place, and begin to remove fuses one at a time from the fuse panel. Check the test light after you remove each one. If the light is on, replace the fuse and move on to the next one.
  • Step 5 Pinpoint the circuit that is causing the battery drain when you pull a fuse and the test light goes out.
  • Posted on Jul 12, 2010


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