2005 Cadillac CTS: whining or grinding noise

Filed Oct 4, 2014 · Transmission · 51,250 miles · NY

Shifting gears was accompanied by clunking in rear differential. This occurred when shifting or when letting off the accelerator. In march of 2014 a whining also accompanied driving at speeds of 50 - 70 MPH. My cadillac dealer replaced the differential with a new one under a private warranty program. Within 2 weeks the differential was again making the same noises. Dealer said that cadillac would not do anything about the problem. Note: servicing mechanic noted after changing the differential fluid, that the fluid taken from the newly installed differential was burnt black.

Filed Feb 16, 2011 · Transmission · 32,500 miles · CA

2005 cadillac cts-v rear differential whine. The rear differential on my cadillac cts-v went out. Metal shavings were found in the diff fluid. I took the cts-v into the dealership to get a warranty repair done.

Filed Mar 16, 2010 · Transmission · 70,000 miles · OK

Rear differential of my cadillac cts-v has begun to whine at 70,000 miles, dealer says the only option to fix it is to replace.

Filed Jan 17, 2007 · Tires, Transmission · 27,000 miles · CA

I have a 2005 cadillac cts-v my first issue was back in 05/05 8,200 miles on car while driving car would not allow me to shift or change gears the car stalled and rolled to a stop. I called for road service 2 hours from home they towed car to an area dealer who later called to inform me the rear differential failed and gm had refused to pay for service. I had the car towed to my local dealer at my expense, at my dealers request. They informed me that gm said the car had excessive tire wear and damage was caused by driver abuse or aggressive driving I was forced to hire an attorney and pay for a vehicle I couldn't drive for several months. Late in august 05 cadillac agreed to pay for the repair. 01/07 27,000 miles I was driving the cts-v changed gears from 2nd to 3rd approx 30 MPH heard a clunk and rear end started to whine I parked the car, called road side service ,they towed the car to the dealer. Customer service rep called a few days later he said the rear end has failed again and needs complete replacement the hangar baring is bent, the main bolt is broke in two pieces and is recommending a complete new rear end he also said gm refused to pay for service to his surprise. Here we go again. My local dealer has the car it has not been repaired as of yet, so yes the old parts are available. The cadillac cts-v rear differential is weak and may break causing this car to skid or suddenly stop, causing an accident, injury,or death. Cadillac knows of problem and has provided some customers with warranty repair, offered 100,000 mile extended warranties for others and yet denied repair for customers with similar problems. This rear differential is under rated for this cars horse power and was designed for use in the standard cts version of this car the rear tires have also been a problem showing early signs of wear. I had to replace my first set front and rear at 8,500 miles, these tires are worst rated tire by consumers at www.tirerack.com and cadillacfaq.com

Filed Oct 27, 2006 · Transmission · FL

2005 cts v . . . Noticed howling whining noise coming from rear end. Cadillac has replaced two rear differentials in my car and attempted to fix the whining noise three other time and I still have the noise coming from the rear end. My car only has 12,000 miles and needs a third rear differential.

Filed Sep 30, 2006 · Transmission · 5,400 miles · FL

The differential assembly in my 2005 cadillac cts-v was whining after only 5,000 miles and had to be replaced.

Filed May 17, 2006 · Transmission · 7,300 miles · AZ

Differential began whining at 500 miles. Was told the noise was normal by the cadillac dealer. Rear differential failed at 7500 miles with the dealer informing me I had abused the car.

Filed Apr 28, 2006 · Transmission · 12,000 miles · CA

Rear end whining noise (now broken), and clutch/drive train noise.

Filed Mar 13, 2006 · Transmission · 3,000 miles · GA

Rear differential makes whining noise which is getting progressively worse. Car only has 4,000 miles.

Filed Feb 22, 2006 · Transmission · 4,500 miles · CA

1-whine in rear end between 44 and 47 MPH 2-noise got louder as time went on (at 6700 miles) 3-rear end was replaced.

Filed Feb 16, 2006 · Transmission · CA

Rear whine in transmission, dealer states is normal.

Filed Feb 16, 2006 · Transmission · 17,800 miles · FL

I have a 2005 cadillac cts-v with 17800 miles. It has developed a whine in the rear differential. Upon investigating further, I found this has not been unusual for this model. (gm has used the same differential in this car as they put in the base cts model, which has significantly less torque) upon taking the car to the gm dealer, they said they would have to replace the differential, but would have to await parts to do so. They are to call me when they get the parts in stock. They also said the clutch has been updated and have ordered a new clutch also.