2018 Buick Cascada problems, complaints & recalls
Most-reported problem areas: Engine (4) · Visibility/Wiper (1) · Structure:body (1)
🧭 Reliability snapshot
Compared against other Buick Cascada model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (717)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-09-26 · PIT5698F · Service Bulletin/Repair Instructions
this pi provides diagnostics tips on how the lin bus works and how to diagnosis it.
Unknown Or Other 2026-09-04 · PIP4902W · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-07-21 · PIT5099J · Service Bulletin/Repair Instructions
pi to help diagnose a/c concern
Unknown Or Other 2026-04-01 · PIT3271Q · Service Bulletin/Repair Instructions
this preliminary information communicates information about how to determine if a wheel and tires size change is available.
Unknown Or Other 2026-03-09 · PIP6104 · Service Bulletin/Repair Instructions
this preliminary information communicates the steps on how to save a gds2 session log and upload to a technical assistance case in cx connect.
Unknown Or Other 2026-03-09 · PIP4902V · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Showing the 6 most recent of 717 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-07-03 · Engine“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 co…”
2026-07-01 · Engine“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 tsb special coverage n192291620 – camshaft cover replacement (later superseded by n232395320).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. …”
2026-04-01 · Engine And Engine Cooling · 72,000 mi“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 …”
2026-01-28 · Engine“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…”
2025-10-09 · Unknown Or Other“while driving down the highway my vehicle decreased in power and then i heard a loud whistle or whining sound. upon examination at the dealership, they determined that the pcv system had failed. the positive crankcase ventilation system caused my camm to leak and created a vacuum leak which blew out the seals of my vehicle. upon further investigat…”
2025-09-03 · Engine“camshaft cover recall on exact model car for different year model, recall doesn’t cover this years model, however, i have the same issue.…”
2025-07-11 · Power Train“chirping sound from under hood took to gm dealer, they changed the belt and transitioned and was still chirping. now say it is pvc/camshaft cover. …”
2025-01-22 · Engine And Engine Cooling:exhaust System:manifold/Header/Muffler/Tail Pipe · 80,000 mi“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 repa…”
2023-04-18 · Visibility/Wiper“17-na-216 was originally issued in in 2017 updated in 2019 to include 2018 model. back windshield detaches from canvas/folding top. was concerned primarily about safety of my child who drives car that windshield would completely fly off when driving. i replaced the folding top cover per bulletin. gm refused to reimburse stating not recalled sinc…”
2021-06-23 · Service Brakes · 💥 crash“the contact rented a 2018 buick cascada. the contact stated while driving at 5 mph and making a right turn, the brake pedal was depressed but failed to respond, which caused another vehicle going at an undisclosed speed to crash into the front driver side of the vehicle. there were no warning lights illuminated. the air bags failed to deploy. the c…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.