Five problems related to crankcase (pcv) have been reported for the 2015 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Terrain based on all problems reported for the 2015 Terrain.
Catastrophic mechanical failure; engine failure. Below freezing day driving normally until the car just died right in the middle of a busy 4 lane road. No warning lights were displayed. Luckily I was able to drift the car over to the curb lane then manually push into a parking lot with cars driving around me. Vehicle taken to independent auto care service which did an inspection stating the pcv valve was frozen which then caused the pressure to blow rear seal and metal fragments could be seen in the oil drippings. No issues or dashboard notifications prior to this event.
The rear main seal for the engine fails because of a clogged pcv valve. This was a problem on previous years for the Terrain and other vehicles that carried a similar type of engine. There was a recall for those previous years (2011-2014). My vehicle is a 2015 GMC Terrain, and I am currently experiencing the same issue. I took my vehicle to a licensed dealership and they quoted me a price of close to $3,000 to make the necessary repairs. In my opinion, since the same issue/problem is occurring, there should be a recall issued to include at least the 2015 year models for that engine.
The contact owns a 2015 GMC Terrain. The contact stated while driving 70 mph with cruise control activated, the rpm suddenly increased to redline, after which the vehicle lost motive power. The contact was able to coast to the shoulder of the roadway, where the vehicle failed to restart. No warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the positive crankcase ventilation (pcv) valve, which then caused a failure with the front crank seal, resulting in damage to the engine. The contact was informed that the engine needed to be replaced. The vehicle was repaired. After investigating the failure, the contact related the failure to NHTSA action number: pe25001 (engine, engine and engine cooling). The manufacturer was notified of the failure but provided no assistance. The failure mileage was 148,000.
2015 GMC Terrain-the pcv system or rear engine seal froze and burst. It happened last month when GA experience record cold weather. When the vehicle’s pcv system freezes it caused pressure to build up in the vehicle’s crankcase that breaks or pops out the rear main engine seal and caused all of the oil to drain from the vehicle while driving. The engine has completely seized and will need to be replaced. There are several bulletins issues about this but no recall. After researching I see there has been a few class action suits filed within the past 12 months. This apparently has happened to quite a few people. I am now up to over 9k total. The pcv repair was 2800, then the timing chains 1800, only to find out that the engine suffered as well. New engine 4500. Please do something about this.
Check engine light on took to dealer and they ran diagnostic. Timing chain is also on its way out. I am the original owner. "water in pcv system obstruction in the secondary air system. " I had this cleaned out a few years ago $500. 00. If the pcv freezes without warning, the engine will seize. No warning for pcv, just visual inspection from tech at dealer.