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Discussion Starter · #1 ·
On the under side of the drivers side battery tray is a round thing that has a plug in one end and feels like a vacuum line coming out the other. What is it?
 

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AlGores worst nightmare
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Battery temperature sensor.
 

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Discussion Starter · #5 ·
I did a search and it appears to be the cruise control. I guess I should not rip it out in a fit of rage if I can't get the pig tail loose. I will be a little more careful.
 

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I thought that was so you could not run the truck on the auxillary battery
only ???
 
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