https://www.1aauto.com/driveshaft-coupler/i/1adsh00041?utm_source=YouTube&utm_medium=description&utm_campaign=videodesc&utm_term=bNnhd7S4cP4
In this video 1A Auto shows you how to remove, replace and install the drive shaft coupler in an 05, 06, 07 Cadillac CTS
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Thanks! My "05 needs this work done. I'm starting to hear that thumping noise.