BodybyFisher Posted April 14, 2013 Report Share Posted April 14, 2013 Fuel gage has not worked for 3 years and I get the code P0463 Fuel Level Sensor Circuit High Input. My fuel gage was constantly pinned on FULL, and at some point when it was close to empty it defaulted to EMPTY. Based on the research and diagnostics I did, I found that the Fuel Level Sensor needed replacing. The fuel level sensor is part of the fuel pump in the tank. Luckily, I can access the fuel pump from the trunk When I pulled the fuel pump out, it was immediately obvious that something was wrong with the fuel level sensor as the arm was loose and flopped around, here is the sensor up close, you will notice when you compare it to the photo that follows, that the two followers are worn out. Here is the new level sensor, notice the difference in the two followers compared to the prior photo. That is quite a bit of wear. Fuel level sensor in place I replaced the pump with the new fuel level sensor in place and WOW, the fuel gage worked perfect! I can't believe I put up with this for so long and it only cost $27 to fix.... Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Cadillac Jim Posted April 14, 2013 Report Share Posted April 14, 2013 Congratulations, and thanks for the photos and explanations. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
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