2019 Cadillac XT4 problems

Filed Oct 20, 2026 · Engine · IL

Dealer, upon inspections, found that the cam carrier is starting to leak. Approximately a $3,000 repair. Per the internet, is sounds like this is a known GM issue with this model.

Filed Oct 19, 2026 · Electrical, Engine · NY

Rodents chewed wiring because it is soy based. I'm lucky because my car was not disabled while driving etc because the EVAP system was affected . This could have been much worse and could have caused death etc if it happened to another system of the car. ie: brakes, propulsion, headlights, air bags, etc etc etc...Cadillac dealer who fixed the issue said that it is a common problem and not warranted and my car has no warranty anyway.

Filed Jul 3, 2026 · Electrical, Engine · WI

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*

Filed May 20, 2026 · Engine · TX

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.

Filed Mar 18, 2026 · Engine · NC

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?

Filed Jan 8, 2026 · Engine · NV

During oil change Cadillac mechanic noted camshaft oil seal leak. Video was provided. Mileage on car is 51,534 at that time. I feel that this is too premature and repair requires pulling the engine. Very expensive. Quote was $4,597

Filed Nov 4, 2025 · Engine · PA

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!

Filed Oct 16, 2025 · Lights · IN

The passenger side DRL/turn signal is dim causing the vehicle visability to be reduced and other drivers unable to see turn indications, increasing the risk of crash. The design of the unit places undue heat near the circuit board causing the unit to fail. The driver's side does not have this issue. This is a known issue with many post on forums on it.

Filed Oct 2, 2025 · Lights · 75,000 miles · NC

The contact owns a 2019 Cadillac XT4. The contact stated that while the vehicle was parked, the contact exited the vehicle and became aware that the daytime running light was out on the driver’s and passenger’s side. Neither the dealer nor an independent mechanic was contacted. No warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 75,000.

Filed Sep 27, 2025 · Lights · GA

Both running light modules failed due to overheating because there was no heatsink thermal compound installed on either unit. They had to be replaced. Repair was successful.