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Beeping noise from dash board

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Hi guys I own a 2002 Malibu  lx response and just recently we have had a beeping noise occur and our perfect pass has stopped working properly. Any help will be appreciated cheers


Aaron Seguin 

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Is it the same beep you hear when you turn the key to the run position but don't start the engine?  Most common source of that beeping is a failing oil pressure switch.  That doesn't explain the PerfectPass though.  Could be multiple issues.

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Yep, probably a bad ground.  A search will reveal that Perfect Pass units are voltage sensitive.  Under the dash and up high on the starboard gunnel area you'll find a negative buss bar with several black wires attached to it.  Check for any corrosion and bad/loose crimps and repair as necessary and then tighten them up good.

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