42 problems related to differential unit have been reported for the 2005 Cadillac CTS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Cadillac CTS based on all problems reported for the 2005 CTS.
Noticed oil spotting on floor and inspection revealed rear end differential unit was leaking fluid. Dealer found hairline crack and replaced differential.
Rear-end differential failure, transmission failure.
Took delivery may, 2005. In less than three months, with approximately 1,500 miles, differential began to whine at speeds between 45 and 50 mph, once up to normal operating temperature. Vehicle currently has ~5,200 miles. Differential now whines between 40 and 55 mph. There seems to be a consensus among many Cts owners that this condition is a precursor to complete, and sometimes sudden, differential failure.
Rear whine in transmission, dealer states is normal.
Rear end leaking and wining replaced rear diff.
2005, Cadillac Cts-v, wheel hop from rear differential, very common in this vehicle. Cadillac has acknowledged issue by providing extended warranties to "some" owners of vehicles, but not to all owners, rear differential is very weak and may break apart, causing serious injury or death, wheel hop is experienced in my vehicle on a daily basis, original tires lasted less than 6,000 miles, and provided a safety/hazard probelm as manufacturer did not advise consumers that tires would have to be replaced in this time frame, 6,000 miles was a period that most consumers would not consider enough mileage for a tire rotation.
Purchased in July 2004. Rear end and differnetial failed at 2700 miles. Replaced rear-end. Replaced rear-end agian at less that 7000 miles, replaced tires at 13500miles, rear-end continued to lock and slide tires. Have had car in dealer 5 times and tomorrow, the 3rd rear-end will be put in!!! Cadillac refuses to buy car back but has extended drive train warranty to 100k miles.