Buick Cascada Engine problems by year

The contact owns a 2016 Buick Cascada. The contact stated that while driving at various speeds, the vehicle shuddered with an abnormal whistling sound coming from the vehicle. The vehicle was taken to a local independent mechanic, where it was diagnosed and determined that the PCV valve needed to be replaced. Two local dealers were contacted; however, the contact was informed that an unknown Buick Special warranty coverage had expired. The manufacturer was made aware of the failure by telephone. The failure mileage was approximately 38,000.

After owning for a year, it started idling very rough. Took it to a shop and there was a GM Service Bulletin issued on these cars N192291620 that expired on 6/2026. They would not reimburse me as it expired and car was repaired by a third party. We had only put 500 miles on it since purchasing. It was the Valve Cover Gasket. As we are on a fixed income with a car under 50k miles, this was a big hit for us.

Pcv failed causing rough idle, etc light and squeezing sound

A squealing sound was coming from the top of my engine and I had low/rough idle and it progressed to a low voltage output and check engine lights. This happened while i was driving on the highway and my speed was eratic and I had to cross 2 lanes to get the next exit. The problem has been reproduced my an indepent service center. The PCV vent constantly pulled vacuum (was stuck open to atmosphere) and the sound was only relieved by removing the dip stick. No warning lamps messages or symptoms. There is NO part...

Vehicle is a 2018 requiring valve cover replacement due to an issue that was recalled on previous years, most recently 2016. Extended warranty was offered for these repairs. TSB Special Coverage N192291620 - Camshaft Cover Replacement (later superseded by N232395320). This should be reviewed for additional recalls.

The contact owns a 2016 Buick Cascada. The contact stated that while driving at an undisclosed speed, the vehicle made an abnormal squealing sound. The vehicle was subsequently taken to the dealer, where it was diagnosed with a PCV valve failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 19,000.

My Buick Cascada is a 2017 model and has 78,000 miles on it. There was a high pitched whistle/squeal type noise I was hearing and was told by the Buick dealership that it is an issue with the PCV valve failing. To replace this it will cost over $2,000 because of the design of where the valve is housed it is part of a much larger piece. In reading commentary on line i discovered that this is a known issue with the Cascada models from various years. Other year models have been granted an extended warranty to...

The contact owns a 2018 Buick Cascada. The contact stated that while operating the vehicle, the check engine warning light illuminated. The vehicle was taken to the local mechanic to be diagnosed, and it was determined that the air intake valve was faulty and needed to be replaced. The vehicle was not yet repaired. The local dealer was notified of the failure. The manufacturer was not yet contacted. The failure mileage was 72,000.

PCV Failure at 62,000 miles. GM extended warranty on 2016 models that demonstrated this problem. Appears to be a design flaw and often fails again after repair. $2000 + job to repair

I brought the 2017 Buick Cascada in for repair following rough idle and check engine light. This vehicle only has 46,200 miles. The mechanic put it to the computer and the mechanic found the issue that was ultimately identified as the camshaft cover/pc valve. This part was already replaced in my vehicle when the vehicle had roughly 21,000 miles. It has now broken again and it is a systemic issue with the Buick Cascada. On Google searches, I found similar issues were reported and GM extended the warranty on Buick...

The contact owns a 2019 Buick Cascada. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The vehicle lost motive power. In addition, the transmission and engine failure warning lights were illuminated. The vehicle was towed to the dealer, where it was diagnosed with turbocharger failure. The contact was informed that the turbocharger needed to be replaced. The vehicle was not repaired. The contact was informed...

Vehicle has rough idle upon start up and randomly rough idle/ acceleration. I have a p0-171 code that comes and goes, Mechanic I took to claims the PCV valve is located in side of the valve cover and feel is the culprit for the issues. Very high vacuum inside engine at this point. No whistling like some have mentioned but if you pull the oil fill or dipstick engine wants to quit and you can tell there is a large vacuum. This is a 2017 cascada and seems to align up with all of the issues that were noted in the complaints. Looking for an extended warranty to get this remedied. Thankyou for your time. current mileage is 90k miles

See attached document for complaint.

Camshaft cover recall on exact model car for different year model, recall doesn't cover this years model, however, I have the same issue.

The contact owns a 2018 Buick Cascada. The contact stated that while operating the vehicle, there was a whistling sound coming from the engine compartment, with the check engine warning light displayed. The vehicle was taken to the local dealer who diagnosed that the intake manifold was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was not contacted. The failure mileage was 80,000.