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Chrysler 300M TSB #070100
TSB070100 - Cold-engine growl. The engines in some 1998-2000 Concorde, Intrepid, LHS and 300M models may emit an off-idle speed growling sound, which comes from the drive belts following a cold-engine start, while the transmission is in Drive or Reverse. The noise usually is heard when the engine revs between 1000 and 1300 rpm. The cure involves raising the tension on the generator/power steering drive belt.