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Frozen Pcv/Blown Rear Main Seal
- Typical Repair Cost:
- Average Mileage:
- 89,600 miles
- Total Complaints:
- 6 complaints
Most Common Solutions:
- not sure (4 reports)
- replace rear main seal (1 reports)
- replace valve cover with integrated pvc system (1 reports)
- No one has added a helpful site for this 2017 Terrain problem yet. Be the first!
A D V E R T I S E M E N T S
GM 2.4L PCV System Froze, Engine Main Real Seal Failure
My wife and I own a 2017 GMC Terrain SLT with a 2.4L engine. On Saturday morning, February 4, 2023, with the temperature down to 1 degree Fahrenheit here in Buffalo, New York with a wind chill temperature of around negative -12 degrees.
While waiting in a drive thru about 2 miles from my home, we heard a pop and the engine sputtered, close to stalling a few times. The engine then seemed to run OK, so we drove the vehicle directly home and parked it in the driveway, Later that morning when I pulled it into the garage, I noticed a large oil stain on the driveway where the vehicle had been parked, which is odd since we’ve not had any drips from this engine prior to this incident. I then checked the oil level and didn’t see any registering on the dipstick. It took 2 quarts to bring it back up to normal levels. I then started the engine again and looking under the vehicle, I could see oil dripping heavily where the back of the engine meets the transmission. We kept the vehicle parked in the garage until I could get it in for service on Monday Feb 6, 2023.
Searching the internet, I found that the above scenario, in which the PCV system builds up pressure and blows out the main rear seal, occurred to a number of other 2.4L owners, especially those in colder climates. Paddock Chevrolet is less than 1 mile from my house so I felt I could get there with the engine oil being topped off. On Monday morning, February 6, 2023, I drove my vehicle over to Paddock Chevy and explained the situation to them and the possible issue. Paddock Chevrolet called me back later that morning and confirmed the PCV system clogged/froze and the main real seal failed. The total repair bill ended up being $3,177 but could have been higher if the engine had lost all of its oil. The Service Advisor told me that they actually had another vehicle in for service with the same exact problem as mine.
I see that there was a GM Technical Service Bulletin (TSB 14882) opened back in March 2015 but this TSB only covered 2010-2013 GMC Terrains with a 2.4L. In this TSB, GM did recommend for full customer reimbursement but only up to March 2016. I feel that my 2017 GMC Terrain (2.4L) had the same engine problem as referenced under TSB 14882 and feel GM should reimburse me as well as other customers in this same situation.
- William M., Buffalo, US