RoadVitals

2018 Buick Cascada

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
11
Latest Jul 3, 2026
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
0
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
1
1 injuries, 0 deaths reported

Overview

Our database contains 11 NHTSA owner-reported complaints for the 2018 Buick Cascada, most frequently naming the engine, airbags and body & structure categories. 714 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

  • Engine654.5%
  • Airbags19.1%
  • Body & structure19.1%
  • Brakes19.1%
  • Powertrain (other)19.1%
  • Visibility19.1%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

No recalls in our database for this model year

That does not guarantee a specific vehicle is unaffected — recalls are issued against VINs, and new campaigns are announced regularly. Check a VIN on NHTSA.gov.

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

View all 11
Engine
Filed Jul 3, 2026

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 number difference in the Camshaft cover between model years 2016 thru 2019 Cascadas. I believe that the 2018 should be included in the same Special coverage as the 2016 and 2019 model years. This issue has been noted in several Casada forums and is also the same as NHTSA complaint IDs: 11593462, 11587414, 11574318, 11515179.

NHTSA ID
11748141
Incident
Jul 1, 2026
Engine
Filed Jul 1, 2026

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.

NHTSA ID
11747657
Incident
Jun 29, 2026
Engine
Filed Apr 1, 2026

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.

NHTSA ID
11728477
Incident
Mar 26, 2026
Mileage
72,000 mi
Engine
Filed Jan 28, 2026

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

NHTSA ID
11714025
Incident
Jan 26, 2026
Filed Oct 9, 2025

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 investigation I found that GM was involved in a class action lawsuit for the 2016 models and that an extended warranty was given for 2016 -2019 Cascada models. 15 years 150,000 miles. However, my vin and year was not included for the same problem.

NHTSA ID
11692340
Incident
Sep 19, 2025
Engine
Filed Sep 3, 2025

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

NHTSA ID
11684855
Incident
Sep 1, 2025
Powertrain (other)
Filed Jul 11, 2025

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.

NHTSA ID
11672790
Incident
Jul 11, 2025
Engine
Filed Jan 22, 2025

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.

NHTSA ID
11637586
Incident
Jan 20, 2025
Mileage
80,000 mi

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

PIT5099J

PI to help diagnose A/C concern

PIT3271Q

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

PIP4902V

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

PIP6104

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

PIP4902U

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

PIT5214G

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Buick Cascada by model year
YearComplaintsRecallsInvestigationsIssue Index
2019500—
2018Viewing110051.2
2017150044.7
2016211151.0

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.