Loud Engine Noise Problems of Cadillac CTS

Tl the contact owns a 2005 Cadillac Cts. The contact stated while driving 35 mph, the vehicle began to make an abnormal noise and the vehicle independently decelerated. The contact stated no warning light was illuminated. The vehicle was taken to an independent mechanic who was unable to duplicate the failure. The vehicle was not diagnosed nor repaired. A dealer was not contacted. The manufacturer had been informed of the failure. The failure mileage was unknown.

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The contact owns a 2006 Cadillac Cts. The contact stated that the vehicle made an abnormal sound from the engine compartment. The vehicle was taken to crest Cadillac (2121 rosa l parks blvd, nashville, TN) where it was diagnosed that the motor and transmission support were not the correct specifications for the engine installed in the vehicle. The manufacturer was notified of the failure and referred the contact to NHTSA. The failure mileage was approximately 40,000. The VIN was not provided.

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The contact owns a 2009 Cadillac Cts. The contact stated that the engine timing chain failed. While driving, the vehicle emitted a loud noise and an unknown warning indicator illuminated. The vehicle was taken to an unknown dealer where it was diagnosed that the engine timing chain failed. The vehicle was not repaired. The manufacturer provided case number: 8-347559061 and informed the contact that the vehicle was not included in a timing chain replacement recall. The approximate failure mileage was 70,000.

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Tl-the contact owns a 2016 Cadillac Cts. The battery became inoperable and the vehicle failed to start. While turning the signal light handle failed to engage in position. Additionally, the dashboard leather was curling. There was a abnormal rumbling noise while reversing. The steering wheel message was displayed. There were no warning lights illuminated. The vehicle was towed to conklin fangman Cadillac 3200 main st lot b, kansas city, mo 64111 (816) 714-7654 where the battery was recharged but, was not diagnosed or repaired. The manufacturer was contacted who referred contact to local dealer. The failure mileage was 7,000. Ap.

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The contact owns a 2008 Cadillac Cts. The contact stated that while driving at 60 mph, there was an abnormal noise coming from the front and rear of the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The VIN was not available. The approximate failure mileage was 100,000.

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The supercharger was replaced for abnormal noise and function as per Cadillac TSB. The new supercharger which had a solid rather than 2 piece connector(isolator) resulted in a loud groan and vibration between 800 and 1100 rpm when in gear. Cadillac has acknowledged this groan/vibration and at first deemed it "normal". Now they have restated their position and allege that their engineers are working on the problem. The dealer's service dept has been told not to attempt to work on a solution to the above. The new 2014 Ctsvs which have the new superchargers have the same problem. The growl/vibration has become more intense and I worry about catastrophic engine failure. Gm customer service reps have been less than helpful. This is yet another example of "caveat emptor".

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The supercharger started to make a noise which sounded like marbles. It now is getting louder sounding like it is going to fall off. It is a Cts-v.

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