Differential or transfer case failure on the 2005 Cadillac Cts
1 crash 1 injury 2 of the 52 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
When differential or transfer case failure gets reported
Owners of the 2005 Cadillac Cts report differential or transfer case failure at a median of 17,500 miles. A quarter of the reports come in before 7,500 miles and a quarter after 65,000 miles, from 45 reports that carried an odometer reading.
A part like this is normally expected to survive 110,000 miles. It is the 1st most-reported problem on this model year.
The mileage distribution
The reported range runs from 2,500 miles at the tenth percentile to 85,000 miles at the ninetieth, a spread of 83,212 miles across the middle 80% of reports.
A spread this wide points at use rather than design. Towing, climate, service history and city mileage all move a failure like this, so the median is a weak guide to any individual car.
64% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 2,988 miles | 7,184 miles | 18,500 miles | 65,000 miles | 86,200 miles |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Of these reports, 1 a crash and 1 an injury are mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $900–$4,200 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 12 model years of this car. It shows up earliest on the 2006, at a median of 12,500 miles, and latest on the 2015 at 105,000 miles.
By volume the 2014 carries the most reports, with 81; the 2005 has 52. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
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.
Excessive wheel hop frequently under mild to heavy acceleration excessive tire wear, tires need to be replaced after 4000 to 6000 miles rear end differential is very weak and may break causing injury or death cadillac knows of problem providing some customers with extended warranties had a 2004 ctsv and it was lemon lawed in july 2005 for the rear diff breaking 3 times within 1 year. *nm
Excessive wheel hop frequently under mild to heavy acceleration excessive tire wear, tires need to be replaced after 4000 to 6000 miles rear end differential is very weak and may break causing injury or death cadillac knows of problem providing some customers with extended warranties had a 2004 ctsv and it was lemon lawed in july 2005 for the rear diff breaking 3 times within 1 year. *nm
Also reported on the 2005 Cadillac Cts
Other brake problem
Other powertrain problem
Control module (ECM/PCM/BCM) failure
Other electrical problem
Other engine problem
Airbag warning light or occupant sensor fault
How far this goes
Complaints are voluntary, so 52 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does differential or transfer case failure happen on the 2005 Cadillac Cts?
Across 45 owner reports that included an odometer reading, half were filed by 17,500 miles. A quarter were filed before 7,500 miles and a quarter after 65,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is differential or transfer case failure on the 2005 Cadillac Cts?
52 reports have been filed with NHTSA, about 1.4 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed