On October 30, 2026, at approximately 3:10 PM, my 2009 Cadillac CTS experienced an apparent engine and brake system failure while I was operating the vehicle. The vehicle lost power, and I was unable to stop despite applying the brakes. The exact component or components that failed have not yet been identified. The vehicle is currently available for inspection by insurance representatives, mechanics, manufacturer representatives, or other authorized investigators upon request. The apparent engine and brake failure created an immediate safety hazard because I was unable to maintain control of the vehicle's speed or bring it to a safe stop. As a result, the vehicle struck utility power equipment near my residence. The incident placed me, nearby residents, pedestrians, and motorists at risk of injury. The collision also caused a power outage affecting homes in the surrounding neighborhood. At this time, the cause of the engine and brake failure has not been reproduced or confirmed by a Cadillac dealer or independent repair facility. The matter remains under investigation pending inspection of the vehicle and its components. The incident was reported to 911, and a police report was generated. The vehicle has been reported to my insurance carrier, USAA. As of the date of this statement, the vehicle has not yet been inspected by General Motors or a Cadillac dealer for purposes of determining the cause of the failure. Additional inspections may be conducted by insurance representatives, repair specialists, or other qualified parties. Prior to the incident, I did not observe any warning lamps, brake system alerts, engine warnings, or other messages that would have indicated an imminent loss of braking capability or engine failure. The failure occurred suddenly on October 30, 2026, at approximately 3:10 PM. The vehicle had recently undergone a 120,000-mile service inspection, and no issues were identified that would have suggested an imminent catastrophic failure.
Cadillac CTS engine failure problems
46 of the 2,220 owner complaints about the Cadillac CTS describe engine failure, most of them for the 2003 model year.
- owner complaints
- 46
- worst model year
- 2003
- typical repair cost reported
- $6,000
- typical mileage
- 62,000
By model year
Often reported together
Steering lock-up 10Check engine light 6Stalling 5Loss of power 3Brake failure 3Transmission failure 2Power steering loss 2Oil consumption 2
What owners say
The contact owns a 2014 Cadillac CTS. The contact stated that while driving at an undisclosed speed, the message "Caution - Pull Over Immediately - Turn off Engine and Wait to Restart Vehicle" was displayed on the instrument panel. The contact pulled over and followed the instructions, and the vehicle returned to normal operation. The contact could not pull over in time, and the steering wheel seized, and the vehicle became difficult to maneuver. No warning lights were illuminated. The failure reoccurred on several occasions. The vehicle was taken back to the residence. The contact researched and was made aware of an unknown recall; however, the VIN was not under recall. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 100,250.
I purchased this vehicle is certified preowned Cadillac and during the warranty time I had a transmission issue that was causing the transmission to jerk when shifting from 1st to 2nd gear and at highway speeds, it would start jerking nonstop. I took it to the dealer and as per a service bulletin, they flushed the transmission fluid and replaced the transmission fluid. This was only a temporary fix because 30,000 miles later the same issues started occurring again and have gotten worse to the point that you can smell the transmission clutches burning and the transmission overheating, possibly causing the number four piston rings to come apart, resulting in an engine replacement as well. I’ve had to replace engine as possible result, but the transmission problem is still there and it has also caused the check engine light to come on intermediately. This could result in a complete transmission failure, causing a vehicle to lose propulsion leading to a possible accident and injuries. This issue needs to be investigated and repairs or replacement made at the manufacturers expense.. This is a four-cylinder turbo engine and an eight speed automatic transmission. In my opinion, the transmission issue caused my engine failure. There should be investigated and an immediate recall issued.
The contact owns a 2011 Cadillac CTS. The contact stated that the vehicle was experiencing a water leak. The contact noticed that the front driver's side seat, door arm rest and floor were significantly wet after rainfall. The contact stated that the failure later occurred on the front passenger's side of the vehicle. Additionally, the contact stated that the vehicle was experiencing electrical failures. The contact stated that after turning off the vehicle, the infotainment system, the heating system, the A/C, and the engine failed to turn off. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the fuse box and wiring needed to be replaced due to the electrical failure. The contact stated that upon disconnecting the battery and removing the fuse, the vehicle turned off. The vehicle was taken to an independent mechanic, where the contact was informed that water was leaking onto the wiring on the floor. The sunroof drain was unclogged; however, the failure persisted. The vehicle remained with the mechanic, where it was undergoing additional water entry tests. The vehicle was not repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 100,000.
Ever since I purchased this 2008 CTS vehicle, I have dumped thousands of dollars to repair the vehicle even after the "recall repairs". Problems persist and the car has become more dangerous than ever. The vehicle had inspected by the dealership a number of times the first 5 years of ownership the first 3, listed below, were the replaced recalls from dealership, the rest are known safety issues that gm denies to admit to faults and recalls. *Ignition starter replacement (still have starter failure issues after 2 repairs from gm) *washer fluid warmer removal (they just snipped the wires and removed the component but left hot wires exposed in vehicle) *motherboard ecm replacement recall(ecm is still faulty and has caused dozens of electrical issues. **************** battery drains over night. On my 6th battery (just bought new one 3 days ago) gauge cluster never recalibrated and is completely disabled. Don't know how fast im going how much gas or any other info related to. sunroof constantly leaking, flooding vehicle and destroying the electrical components which fried many relays including the door lock and power window components vehicle refuses to turn but cranks on fuel often will not allow a fill up ecm throwing irrelevant codes headlight failure due to seal defect that allows moisture into headlight casing frequent oil loss. 2018: vehicle engine failure whilst driving on freeway with zero warning nearly causing a fatal crash. Purchased new alternator (Shade tree auto in san Clemente) and had to pay 2000 for tow and alternator transmission failure and near miss collision into another vehicle on a steep incline road I have taken this vehicle to a multitude of repair shops and auto supply to get a diagnosis. Even the dealership didn't have any answers. Now I am out of a car. and money. These issues had been confirmed by Rorick Cadillac, Shade tree auto, oreily, s and s auto, auto zone.
Engine warning light on. Diagnosed by Mike Maroon Cadillac, Boulder Colorado as Po008 code Bank one engine timing off. Further diagnosed as faulty engine cam chain. Advised not to drive car. Car available for inspection. Not being driven. Safety put at risk by possible major engine failure during use. Problem confirmed by two other repair facilities. Engine warning light on for several months. Problem confirmed by Mike Maroon Cadillac, Boulder Colorado. Taken there at the request of Cadillac customer service phone 800 333 4223. Contact at Cadillac customer service Miguel ext 591 6218. Given case #[XXX] Vehicle inspected by Mike Maroon Cadillac at the request of Miguel at Cadillac customer service. Inspection done at owners expense. Cadillac customer service not returning calls. Owners contact # [XXX] Mike Maroon Cadillac contact, Dave 303 442 3160 R/o #[XXX] Do not have capability to upload files. Will fax upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2007 Cadillac CTS. The contact stated upon parking the vehicle, he attempted to release the ignition key from the ignition switch however, the key remained stuck inside the ignition switch. The message Thief was displayed. The contact was able to release the ignition key after several minutes. The contact stated upon entering the ignition key inside the ignition switch and starting the vehicle in his garage, the message Thief was displayed. The contact turned off the vehicle but could not release the ignition key from the ignition switch. The contact stated that the ignition key had remained stuck inside the ignition key for a week. Additionally, the contact stated that the gear shifter had seized in park(P). An unknown dealer was notified of the failure and advised the contact to take the vehicle in for repair. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 99,000. The consumer stated after having the vehicle repaired air condition, cruise control, and speedometer stopped working.
The vacuum pump failed and caused catastrophic engine failure. The vacuum pump was constructed with substandard design and the composition of the parts within the vacuum pumps internal components. The vacuum pump is an integral part of the emissions system, the braking system and the engine. This is not an isolated incident as the replacement vacuum pump, even if replaced, will fail again. The pump should have been designed with a shear pin so the engine camshaft would not have been destroyed.
2015 Cadillac CTS Luxury, 81k miles, rear differential has metal chunks in its fluid and makes load roaring sound. Dealership mecahnics said that the differential dailing that early is a known issue, and if it had progressed rhe differential would have seized up and the rear tires would have locked up. No parts available anywhere for differential replacement or overhaul.
Burning smell, traction control, rear axle service along with suspension lights all came on the odometer. Shakes at low idle and wont stay running. Happened this weekend after pulling into the driveway after driving. We scanned code for cylinder 4 misfire. On scanner we had multiple other cylinder misfires but cylinder 4 is a dead misfire. We removed spark plug and found wore. We initially thought to start with replacing spark plugs and cylinder 4 coil. We consulted with customer and agreed to replace all spark plugs and cylinder 4 coil. After replacing we found no change in cylinder 4 misfire. We removed and re installed original coil and re tested. We performed a compression test on cylinder 4 and have 0 PSI. We thought possible carboned valve stuck open due to direct injection system. We performed a GDI carbon clean but still no change. We installed a borescope into cylinder to inspect and found what looks like a broken piston or part of a valv We scanned code for cylinder 4 misfire. On scanner we had multiple other cylinder misfires but cylinder 4 is a dead misfire. Weremoved spark plug and found worn. We initially thought to start with replacing spark plugs and cylinder 4 coil. We replace all spark plugs and cylinder 4 coil. After replacing we found no change in cylinder 4 misfire. We removed and re installed original coil and re tested. We performed a compression test on cylinder 4 and have 0 PSI. We thought possible carboned valve stuck open due to direct injection system. We performed a GDI carbon clean but still no change. We installed a borescope into cylinder to inspect and found what looks like a broken piston or part of a valve broken and smashed into the piston. Fault is internal engine, would need to tear down and re build or replace engine assembly. My safety was at risk driving 80mph on the highway perhaps engine could have seized or caused problems I’m not able to deal with along with having my infant and toddler in the car.
Related recalls
No recalls on record for this model year.
Questions about the Cadillac CTS engine failure
Which Cadillac CTS years have engine failure problems?
The model years with the most reports are 2003 (7 complaints), 2005 (7 complaints) and 2007 (5 complaints).
How much does it cost to fix engine failure on the Cadillac CTS?
Owners who mentioned a price put the repair at about $6,000 (median of 5 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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