2019 Cadillac XT4

I took my suv in for diagnostics to a certified GM dealership at least twice while still under warranty. The check engine light was on, the car was behaving abnormally as well as making unusual concerning noises. The dealership sent me away saying no codes showed up and they couldn’t find a problem.The light would come on and off sporadically. I took screen shots of my dashboard every time the light came on. Within months of my warranty expiring xI was traveling to IL 1.5 hours from home on I-90 during heavy traffic. Suddenly the dashboard provided extensive messages ex: engine overheating, idle engine, etc and I could not get the rpm’s over 68, then 65; then 60; then 58 etc. I pulled over to let the engine cool on the side of a four lane bumper to bumper interstate environment alone. I had to have the car towed back from Elgin on my dime and took it into the same dealership where this time I spent 1700 on what I recall being told “engine coolant repair” as they claim small leak. Less than a month later the check engine light came back on so I took it back to the dealership. My Cadillac app was registering the same alertmas before the fix : engine coolant system. Dealership said it was a blown head gasket (something about cyl 1) sep from what they worked on for the 1700 and ate wanting over 3700 for this repair. My car was I believe months out of manufacturer warranty though I complained multiple times of concerns and because it is a “separate” issue from May repair and no year warranty from them either . 7 day wait for replacement part alone. I had car towed directly from dealership it was at to a mom n pop auto repair center in town awaiting full diagnostics, preserving “evidence” I learned online my particular suv (2019 Cadillac xt4 premium luxury) is known to have engine and other issues that don’t register codes and likely over 90% chance related to misdiagnosis or a band aid repair. *i have screenshots of dash, “my caddy”app alerts, etc*

Recently went to my local Sewell dealership for my routine oil change. With an oil change they do a complimentary multipoint inspection. During the inspection they noticed that my camshaft carrier was leaking and needed to be resealed. The resealing of the camshaft carrier would be around $4,000. I don’t have that kind of money laying around especially in this economy. I just got a new place and I can’t Afford to spend $4,0000 right now. I did some research online and apparently this is a common issue with Cadillac cars. I reached out to other Cadillac owners and they advised me to submit a complaint with the NTHSA due to the frequency of this issue across Cadillac cars. Will there be some type of reimbursement/recall to fix this issue because if it happening across multiple Cadillac cars no matter the make or model, this should be on GM/Cadillac to fix and not the consumer.

I took my car is for service at the Cadillac dealership and they stated there was an oil leak from the camshaft carrier. When I asked more questions they stated it was a fairly common problem with the XT4 and a few other models where there was a faulty seal at the "T-joint" (cam carrier T-joint). My car is no longer under warranty, but had under 26000 miles at the time. There were no warnings or symptoms. I would not have not if the dealer had not told me. The cost was estimated at $3254.45. If this is a common problem, why isn't there a recall?

At around 17,000 miles the timing chain tensioner went bad. At cold start up you could hear the timing chain hitting the 'guide' until the oil pressure built up and provided enough tension. I was covered by an aftermarket warranty - which paid all the labor ($1700). I had to pay a $100 deductible -along for the parts ($300). I feel that this should be looked into and Cadillac should replace any tensioner that might be defective- since this could cause catastrophic engine failure. If you check - it does appear the 'new tensioner' part number is a revision- indicating Cadillac probably knows the old part number was defective!

The throttle and accelerator pedal is very HOT- highly sensitive, resulting in jerky lunging upon start off in 1st gear from a dead or 1 mph stop. The vehicle has been into the dealer 2 times for this issue with the same repair comments, vehicle meets all factory specs and all XT 4 react this way- well that's not safe. If that's the case, then this is a design defect which is unsafe as the accelerator pedal reacts to quickly with a non-smooth action and lunging which could cause a rear end collision. Other car evaluators have also indicated the XT6 has a jerky accelerator, just like what I am reporting. It may be the TPS -Throttle Position sensor in combination with the APS-Accelerator Position sensor. Sometimes it is so violent it throws occupants backward into the seats. Dealer says within spec. GM needs to solve this issue.

The engine started to leak oil, coming down the passenger side of the motor. This was around at 22,000 miles. The dealer says that this is a leaking intake manifold gasket. It has taken them 3 separate repairs to fix this issue. I feel that my engine warranty from Cadillac should be extended, past the 5yr 60k powertrain warranty. We have had this vehicle now for 4 years, and we don't drive it alot. As of this writing 11/21/2023 the vehicle has around 29,000 miles on it. It appears that it is leaking again, so it will be going back into the dealer again.

2019 CADILLAC XT-4 [XXX] MILEAGE IN FIRST SERVICE ATTEMPT 27500 4/28/2023 BROUGHT THE XT-4 IN FOR SERVICE IN WILLIAMSBURG VIRGINIA AND FOR AN OIL DRIP PROBLEM. OIL LEAKING DOWN THE SIDE OF THE MOTOR FACING THE PASSENGER SIDE. DEALER REPLACED NUMEROUOS GASKETS AND ENGINE COVERS AND RETURNED THE VEHICLE ALONG WITH THE SERVICE AND STATE INSPECTION WORK. REPAIRS MADE UNDER POWERTRAIN WARRANTY. ENGINE CONTINUED TO LEAK AND WAS BROUGHT BACK INTO THE DEALERSHIP 05/02/2023. DEALER SAID THAT THE OIL PAN WAS CRACKED AND THEY REPLACED IT UNDER POWERTRAIN WARRANTY. ENGINE CONTINUES TO LEAK, AND WAS TAKEN BACK TO THE DEALERSHIP ON 05/08/2023 FOR MORE REPAIRS ALONG WITH A FAILED BATTERY. ENGINE IS STILL BEING WORKED ON AS OF 05/12/2023. DEALER SAYING THAT ENGINE HAS A LEAKING HEAD GASKET AND THAT GM IS STARTING TO REALIZE THAT THEY HAVE A PROBLEM WITH THIS ENGINE. REPAIR REQUIRES SPECIALIZED TOOLING FOR INSTALLING THE HEAD GASKET. STARTING TO RUN INTO 10 DAYS NOW WITH THE LOSS OF USE OF THE XT-4. OIL LEAK IS AFFECTING THE ENGINE PERFORMANCE STALLING AND CHUGGING AND MAY BE MAKING ITS WAY INTO THE PASSENGER FRONT RIGHT BRAKING SYSTEM. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).