The 2006 Cadillac CTS has no open NHTSA recalls. Owners report 7 recurring issue clusters, led by “Rear axle pinion seal and differential leak.” Cadillac uses the GM Oil Life System: an algorithm watches engine revolutions, temperature, and load, then lights the change-oil message — typically around 7,500 miles in mixed driving, capped at 12 months, with dexos-approved oil. Turbo fours in ATS, CT4, XT4, and XT5 are harder on oil than the indicator suggests in short-trip driving. Northstar-era V8s (DeVille, Seville, Eldorado) live and die by their cooling system — coolant condition checks are not optional on those cars. Escalade shares its 6.2L V8 and 10-speed with GM's trucks and follows the same fluid schedule.
No open recalls on file. NHTSA lists no unrepaired safety recalls for this year, make and model. A recall can be issued at any time, and a specific car can still have one open — check yours by VIN at nhtsa.gov/recalls.
What drivers and federal regulators have officially reported about the 2006 Cadillac CTS.
POWER TRAIN
7 NHTSA complaints · 2011-07 → 2020-09
“TL* THE CONTACT OWNS A 2006 CADILLAC CTS. THE CONTACT STATED THAT WHEN THE VEHICLE SHIFTED INTO GEAR, THE VEHICLE JERKED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO LYNCH CADILLAC OF AUBURN (154 W CREEK PKWY, AUBURN, AL 36830) WHERE IT WAS DIAGNOSED THAT THE REAR AXLE PINION SEAL”
“REAR DIFFERENTIAL IS LEAKING, AND MAKES NOISE HARD GRINDING NOISE. *TR”
“FAILURE OF REAR DIFFERENTIAL REAR AXLE SEALS”
AIR BAGS
56 NHTSA complaints · 2011-01 → 2026-04
“TL*THE CONTACT OWNS A 2006 CADILLAC CTS. WHILE DRIVING APPROXIMATELY 55 MPH, THE CONTACT NOTICED THAT THE FRONT PASSENGER AIR BAG WARNING INDICATOR ILLUMINATED ON THE INSTRUMENT PANEL. THE WARNING INDICATOR REMAINED ILLUMINATED UNTIL THE ENGINE WAS TURNED OFF”
“I HAVE A CADILLAC CTS 2006 AND MY AIR BAG LIGHT CAME ON. I TOOK THE CAR TO THE CADILLAC DEALER FOR DIAGNOSIS AND THEY FOUND THAT THE FRONT SENSOR CONTROL MODULE NEEDS TO BE REPLACED. I CONTACTED MY EXTENDED WARRANTY COMPANY AND THEY EXPLAINED THAT IT WAS NOT COVERED UNDER MY”
“I am deaf and the “service Air Bag” and the symbol came on several times and I took it to a certified mechanic who spent two days checking. This is the what he said upon diagnosis, “ The part you need for the air bag light has been discontinued not available anymore.””
SERVICE BRAKES
40 NHTSA complaints · 2011-04 → 2026-06
“FATAL CAR CRASH RESULTED IN DEATH OF DRIVER (ONLY PERSON IN THE AUTOMOBILE). HISTORY OF SERVICE BRAKES HYDRAULIC PROBLEM ON THE 2006 CADILLAC CTS--PRESSING BRAKE PEDAL AND LUNGING OR SUDDEN ABNORMAL ACCELERATION WITH LOSS OF STEERING. *TT”
“LOST 95% OF THE BRAKING CAPACITY WHILE IN TRAFFIC. LATER FOUND UPON REPAIR COMPLETELY RUSTED BRAKE LINES AT THE PASSENGER SIDE LINE ABS JUNCTION. LOSS OF BRAKE FLUID AND BRAKE FUNCTION ENSUED. *TR”
“EVERY TIME I TURN A HARD LEFT OR RIGHT INTO A PARKING SPACE MY CAR LOOSES ITS BRAKES & MY SERVICE BRAKES ASSIST LIGHT GOES ON. *TR”
ELECTRICAL SYSTEM
16 NHTSA complaints · 2012-08 → 2024-04
“BETWEEN 12/2013 AND OCTOBER 2014 MY CAR BLOWS OUT ELECTRONIC CONTROL MODULES A/K/A E.C.M.S POSSIBLE CAUSES ARE THE IGNITION AND OR FUEL GAUGE SHOWS MOMENTARILY NO GAS MOTOR SHUTS OFF AND STALLS WHILE DRIVING. *TR”
“TL* THE CONTACT OWNS A 2006 CADILLAC CTS. WHILE DRIVING 35 MPH, THE FUEL AND TEMPERATURE GAUGES FAILED WITHOUT WARNING. UPON REACHING THE CONTACT'S DESTINATION, THE KEY BECAME STUCK IN THE IGNITION”
“I AM REPORTING THAT I HAD AN INCIDENT WITH MY KEY BEING STUCK IN THE IGNITION, THE KEY COULD NOT BE REMOVED FROM THE IGNITION.THE CAR WAS TAKEN TO THE DEALER WHO SAID IT WAS A COMPUTER PROBLEM”
ENGINE
6 NHTSA complaints · 2011-06 → 2017-01
“I TOOK MY 2006 CADILLAC CTS INTO A GM DEALER FOR A RECALL. THEY ALSO CHANGED THE OIL. EVER SINCE THEY CHANGED THE OIL, MY CAR HAS BEEN BURNING AN EXCESSIVE AMOUNT OF OIL. I HAD TO PUT A QUART OF OIL OR MORE ABOUT EVERY 500 MILES”
“ENGINE HAS USED ONE QUART OF OIL EVERY 800 TO 1000 MILES SINCE I BOUGHT IT IN 2013. NO SMOKING, NO LEAKING. JUST DISAPPEARS AND NO WAY TO KNOW WHERE IT WENT. ONLY HAD 38,000 MILES ON IT AND HAS 85000 MILES ON IT NOW AND STILL DOES IT”
“TL* THE CONTACT OWNS A 2006 CADILLAC CTS. THE CONTACT NOTICED A LARGE AMOUNT OF ENGINE OIL LEAKED ONTO THE GROUND. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO REPLACED THE VALVE COVER. THE FAILURE PERSISTED AFTER THE REPAIR”
ENGINE
6 NHTSA complaints · 2012-09 → 2018-04
“TIMING CHAIN MISSING TEETH DUE TO TENSIONER PROBLEM IN THE VEHICLE. I BELIEVE THIS IS A MORE THAN COMMON PROBLEM WITH THE VEHICLE ACCORDING TO GOOGLE REPORTS. PLEASE INVESTIGATE. THIS PROBLEM COULD HAVE KILLED ME AND MY CHILDREN AS WE LEFT FROM CHURCH”
“CHECK ENGINE LIGHT CAME ON AND THE CADILLAC DEALER AS WELL AS TWO INDEPENDENT SHOPS GAVE THE SAME DIAGNOSIS -- THE TIMING CHAINS [3] HAD EVIDENTLY 'STRETCHED' -- NO RECALL, NO WARRANTY -- ONLY $1,500.00 OUT OF MY POCKET”
“I HAD TIMING CHAIN DONE ON MY CAR IN OCT. OF 2011 AT JACK WOLF IN BELVEDIRE, IL AT THE TIME THE CAR WAS FIXED UNDER A EXTENDED WARRANTY. I THEN HAD THE SAME PROBLEM HAPPEN AGAIN JAN. 2013”
VISIBILITY/WIPER
5 NHTSA complaints · 2012-07 → 2017-01
“WINDSHIELD WIPER MOTOR WILL NOT SHUT OFF ONCE TURNED ON. INTERMITTENT DOES NOT WORK AT ALL. MUST STOP THE VEHICLE, TURN OFF THE MOTOR AND REMOVE THE KEY FROM IGNITION IN ORDER TO STOP THE WINDSHIELD WIPERS. EVERYTIME THE WIPERS ARE TURNED ON THIS HAPPENS...EVERYTIME”
“THE WINDSHIELD WIPERS WILL NOT TURN OFF. THEY CONTINUE TO GO. I HAVE TO TURN OFF THE ENGINE AND TAKE THE KEY OUT OF THE IGNITION FOR THEM TO STOP. *TR”
“TURNED ON WINDSHIELD WIPERS AND WINDSHIELD WASHER MOTOR STARTING SPRAYING CLEANER. I TRIED TURNING OFF THE WIPERS AND EVEN CHANGING THE WIPER SPEEDS BUT THE MOTOR KEEPS TRYING TO SPRAY CLEANER”
Issues on other model years
Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 20, 2026. Investigation data refreshed Sep 20, 2026.
We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.
Critical for safety and preventing major damage
Change when the Oil Life System calls it — typically around 7,500 miles, never beyond 12 months. dexos1 full synthetic on modern engines; Blackwing and supercharged V-Series run hotter and should not stretch the indicator. Northstar V8s: watch for consumption and leaks at the rear main and oil-pan perimeter.
Estimated cost — typical U.S. ranges
Dealer
~$120–$160
Shop
~$85–$115
DIY
~$25–$55
Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.
Rotate every 7,500 miles with the oil change — GM pairs the two. Staggered-fitment V-Series cars can't rotate front-to-rear; budget rear tires accordingly.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Often free at the shop where you bought the tires — worth asking before paying.
Inspect pads, rotors, and lines at every service. Brembo-equipped V-Series wear faster than the base cars; magnetic-ride models should also get a look at shock condition while it's on the lift.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.
Keeps your vehicle running smoothly and efficiently
GM lists roughly 45,000 miles under severe service (which includes most city commuting) for the 6/8/10-speed automatics. Older 4T80-E units behind Northstars respond well to a simple drain-and-fill — avoid pressure flushes on high-mile cars.
Estimated cost — typical U.S. ranges
Dealer
~$330–$500
Shop
~$235–$355
DIY
~$60–$180
Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.
Turbo fours (ATS 2.0T, CT4, XT4): roughly every 60,000 miles. Naturally-aspirated V6s and V8s carry iridium plugs rated to 97,500–100,000 miles — check the manual for your engine.
Estimated cost — typical U.S. ranges
Dealer
~$285–$390
Shop
~$200–$275
DIY
~$25–$100
Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.
GM schedules replacement around 45,000 miles; inspect at oil changes in dusty regions.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
5-minute job on most cars; the airbox lid usually has clips, no tools needed.
GM recommends fluid replacement about every 45,000 miles or 3 years. Magnetic-ride and V-Series cars driven hard should err toward the 2-year mark.
Estimated cost — typical U.S. ranges
Dealer
~$180–$200
Shop
~$125–$140
DIY
~$10–$25
DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.
Inspect from 60,000 miles; replace on cracking or glazing. Supercharged V-Series engines have a second, dedicated blower belt — inspect both.
Estimated cost — typical U.S. ranges
Dealer
~$195–$235
Shop
~$135–$165
DIY
~$20–$50
DIY-friendly if you can reach the tensioner. Inspect for cracks rather than swap on a strict mileage interval.
Extends the life of your vehicle and improves comfort
Replace roughly every 22,500 miles per GM's schedule — sooner if the climate fan has lost its punch.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.
Dex-Cool is rated 5 years / 150,000 miles. On Northstar V8s this is the schedule that decides the engine's fate — low or contaminated coolant is how head-gasket trouble starts. Check level and condition at every oil change on those cars.
Estimated cost — typical U.S. ranges
Dealer
~$285–$330
Shop
~$200–$235
DIY
~$25–$60
Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.
Test annually after year 3. Stop-start-equipped models and anything with Super Cruise use AGM batteries — replace like-for-like, and expect shorter life from the electrical load these cars carry parked.
Estimated cost — typical U.S. ranges
Dealer
~$225–$390
Shop
~$160–$280
DIY
~$130–$250
Most auto-parts stores test and install batteries free with purchase. Skip the dealer markup.
Occupant deaths in fatal crashes (FARS)
108 crashes 1990–2024
How the 108 occupant deaths break down
74
driver deaths
34
passenger deaths
108
occupant deaths
Crash years covered: 1990–2024 This model year first appears in 2006 crashes. Older models have had more years on the road to appear in these crashes, so a higher count here does not by itself mean a vehicle is less safe.
FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number
FARS 2024 data is an annual report file. NHTSA revises these records when the final file is published, so this count can change.
Every vehicle has exactly one driver seat, so driver deaths line up fairly when you compare one model to another. Occupant deaths include passengers, so a three row SUV can show a higher number than a two seat car simply because it carries more people.
Both figures are plain counts, not rates. A rate would need to know how many of each vehicle are on the road, and that registration data is not public, so we do not publish rates or scores of any kind.
IIHS publishes driver death rates using this same driver only idea, paired with a registered vehicle years denominator we do not have. Their rates and these counts answer different questions, so do not read either number here as a safety rating.
Owner-reported problem signals
Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.
23
complaints mentioning a crash
2
complaints mentioning a fire
Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.
How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.
This maintenance schedule for the 2006 Cadillac CTS reflects Cadillac's published service intervals and the GM Oil Life System system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.