pitbull25 Posted December 20, 2007 Report Share Posted December 20, 2007 i have a loud thumping noise when i take off in first gear and sometimes in second. usually only when i get on it pretty hard. the noise seems to be comming from underneeth me. it makes me think that it might be the drive shaft. anyone have a clue to what im talking about? Link to comment Share on other sites More sharing options...
Ranger Posted December 20, 2007 Report Share Posted December 20, 2007 Maybe a bad engine or trans mount? Link to comment Share on other sites More sharing options...
Cadillac Jim Posted December 20, 2007 Report Share Posted December 20, 2007 Check the torque wishbones. If they are moving, they, and the front motor support, must be replaced. Not a big job. I would do it myself. -- 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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