Engine Rattling And Whining Sounds Problems of Cadillac CTS

Tl the contact owns a 2009 Cadillac Cts. The contact stated that the vehicle made an abnormal rattling noise while accelerating at 40 mph. In addition, the check engine indicator illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the timing chain needed to be replaced. The contact called the local dealer (larson Cadillac, 6411 20th st e, fife, wa 98424, (253) 777-0271) and was informed that the vehicle was not covered under a recall. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was unknown.

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Cadillac sent me a letter dated June 2014 with my vehicle's VIN on it indicating that "the supercharger may develop a noticeable rattle noise at idle. The noise will typically go away when the engine rpm is raised slightly above idle. However, if left uncorrected, the problem, over time, may lead to contamination of the lubricating grease and cause the bearing to squeal. If left unaddressed, the bearing may overheat and can cause the engine seizure or no-start condition. " Cadillac then goes on to say that they will extend the warranty for this issue for 10 years from the service date. I brought my car in to ed morse Cadillac in sunrise FL in Jan 2015 with this letter because the car had the noise as described in the Cadillac letter. The service adviser advised that this car was not one of the vins covered. ??? I just brought my car in for an oil change and the three mechanics all heard the noise and indicated it sounded like something was wrong. I called up the Cadillac number 1-800-204-0261 and basically "min" told me that this isn't a recall but an extension of the warranty, so despite Cadillac sending me a letter indicating my car may have this specific problem that they will fix and that my car has the indicated symptoms in their letter, min at Cadillac says that I would have to pay for the diagnostic costs for Cadillac to determine if the problem as indicated in their letter is indeed what they sent me the letter for. I find this unbelievable that Cadillac is putting the onus on the customers to risk the cost of teardown or a major engine malfunction and accident, instead of recalling these cars and taking care of the problem that they notified me of. Why should I be fronting money to diagnose the problem Cadillac says I have??? clearly Cadillac would prefer the warranty to run out and not have to pay for $3k repairs on all of these cars.

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I have a 2005 Cadillac Cts with 67,000 miles. Since about 65,000 miles car has been makeing a rattling sound under the hood during accelaration. I have given the car a tune up, oil change and the car has other fluids are at level. Once my car has accelarated and the gears have changed (I. E, second gear) the rattling sounds stops. . The noice is continuous and only happens at accelaration, not while idleing. In addition every now and again when a front seat passenger gets in the car the airbag sensor/light comes on the dashboard. This problem doesn't happen often but it happens every once in a while. Upon doing my research for both these issues I find that I am not the only one haveing this problem. . . Hopefully something will be done so that gm can address these serious issues without having the consumer/owners haveing to pay an arm and a leg.

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