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2006 chevy trailblazer_ls
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:duh:I HAVE 2006 TB. I REPLACED THE IGNITION SWITCH ABOUT A MONTH AGO AND JUST HAD THE FUEL SENDING UNIT SENSOR REPLACED YESTERDAY. RAN FINE FOR ONE DAY. WENT TO LEAVE THIS MORNING AND IT WONT DO ANYTHING. ACTS LIKE BATTERY IS DEAD AND KEY WONT GO BACK INTO LOCK POSITION. WOULD THIS BE THE SWITCH ALREADY? I NEED HELP ASAP![THANKS
 

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2005 chevy trailblazer_ls_ext
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Did you have the battery tested?
The OEM batteries are really only good for about 2 1/2 - 3 years. Some have gone longer, but a lot of us have replaced them around the 3 year mark.

Also, check for something not going to "sleep". I recall someone else a while back what a similar problem and the Onstar module was shutting off like it should - and running the battery down.
 
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