Jump to content

Battery Dies, sometimes, overnight


Recommended Posts

I have a 2011 GMC Canyon 4x4 3.7 liter automatic that occasionally, very random, overnight, the battery will drain down to nothing so that the dash does not even light up when key is turned on. Nothing. Not a glimmer of light.

As soon as the booster pack is connected to the battery, the truck will start and then be good, sometimes, for a few days.  Sometimes it won't start all day long without the booster pack.  We have changed out some of the power relays. Checked for bad connections to ground and to the system. We have connected an AMP meter to the battery positive post ,in series with the battery and checked for current drain when shutting off the ignition.  It draws approx. 2.5 amps for a few seconds then drops to .100 milli amps for a few seconds, then down to 0.001 amps and stays there until key is turned on again where it goes back up to approx. 2.5 to 3.0 amps and again repeats the drops when shut off.

  We have even install a 0.5 amp battery maintainer that gets plugged in at night.  Even then some mornings the dash is dead on key on and no start.

 

Any Ideas?????

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.