6.5
fairly significant- Crashes / Fires:
- 0 / 0
- Injuries / Deaths:
- 0 / 0
- Average Mileage:
- 10,788 miles
About These NHTSA Complaints:
The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.
« Read the previous 20 complaints
Pulling into work parking lot on Saturday 31Dec2022, my engine died, thinking it was the alternator or the starter, had it towed to a repair shop. Didn-??t find out until Monday, 2Jan2023, that the engine completely locked up. The rear seal blew out and drained all the oil. I have been reading up on this and apparently this is reoccurring thing in said make and model of 2017. GMC and GM have to put out a recall on these vehicles with this manufacturing error/problem. Now I have to get a new goddamn vehicle because I cannot afford to get the engine replaced, which costs around $7000. End of message.
- Hillsboro, ND, USA
In very cold weather the 2.4 engines will blow the rear main seal out and cause rapid oil loss causing engine failure. This is the second time it has happened. First time was February 2022 and the dealer said they havent seen this problem before
- Columbia, MO, USA
It was Christmas weekend, the coldest days our area had seen this time of year in decades. Temperatures were around 0 degrees, with wind chills that were -25 below. The check engine light had come on the day before. My husband was literally driving to the mechanic to have it looked at, when the vehicle completely broke down across the street from his destination. Thank God he was approaching an intersection when it died, and not traveling at a higher rate of speed, where he could have been injured, or others on the roadway around him could have been injured. We had the vehicle towed to our GMC dealership where we purchased it just three years prior. Upon inspection from the mechanic, it was determined that the PCV valve was plugged causing pressure on the rear main seal, which then blew out, bending the valve covers, breaking the timing chain, the water pump chain, and damaging the head gasket. The whole bottom of the motor was covered in oil. Absolute catastrophic damage!! I-??m told the cost to replace these parts to essentially rebuild the engine, would start at approximately $4000. A brand new engine would be about $11,000! This entire situation to me is just unbelievable! A five year old GM vehicle, with just 46,000 miles on it! This should not have happened. In researching, I-??ve been made aware that this is a common issue with GMC Terrains. In fact there was Technical Service Bulletin made by GM for 2010-2013 models whose PCV valve would clog causing rear main seal blow outs. The holes were so small in diameter, technicians would use a 1/16 drill head to clean it out. This is an obvious manufacturer defect that apparently hasn-??t been resolved in the newer model Terrains. How has this not been a safety recall yet?? Shame on you GM! This will be the last GMC vehicle I will own!
- Mckean , PA, USA
timing chain issues resulting in a loss of power of the vehicle while driving. The vehicle stalls out and shuts off. Or it will go into power saving mode and slow down to only 20mph. It did this to me one a MAJOR HIGHWAY and I almost was in an accident. Way to many issues with gmc owners and the timing chain on their vehicles
- Conestoga, PA, USA
Driving home from work and was about 4 miles away from home when the "service stabilitrak' and "reduced engine power" lights came on. Safely drove home, parked vehicle on road to shovel driveway (snow storm). When I went to start it to move it into driveway "oil pressure" light came on. After moving it off street noticed oil on road where vehicle was sitting. Had towed to dealer where I get my oil changed (which was done about 3 weeks prior) they stated rear main seal went causing oil to drain from engine which also ruined my valves and threw out the timing. GM says they'll pay 25% of total $6200 bill. Although GM has yet to return a call regarding the case I opened with them on this asking for a larger percentage.
- Brooklyn, CT, USA
The rear main seal broke. Causing oil to leave the reservoir and empty the engine. This was due to a frozen pvc from cold temperatures. My vehicles engine light came on and I pulled over immediately noticing there was no oil. but there was never an indication of low oil. My vehicle is serviced with every 5k miles for oil. 109,000 miles on a 2017 terrain. Blew the rear main seal and caused other damage as well. This is a manufacturers faulty equipment.
- Bonfield, IL, USA
The Rear Main Seal broke, thus causing major oil leak. I have been doing my investigations and there are many out there like myself. This is NOT an easy fix and is very expensive! I suggest if anyone else has the same issue please report it.
- Hammond, IN, USA
Available for inspection upon request. The rear main seal is out, which is causing an oil leak. The intake manifold failed because the pcv system has a clog which has caused too much pressure to build up and caused the rear main seal to blow out. There were no dash lights. My car was completely out of oil from the issue and I had no indicators. This issue has been check and confirmed by a GMC mechanic.
- Kansas City, MO, USA
PC/rear main seal blew
- Bonfield, IL, USA
The rear main seal blew out due to crackcase pressure build up.
- Elwood, IL, USA
The rear main seal broke. Causing oil to leave the reservoir and empty the engine. This was due to a frozen pvc from cold temperatures. My vehicles engine light came on and I pulled over immediately noticing there was no oil. but there was never an indication of low oil. My vehicle is ervex with gmc every 5k miles for oil. Only 74,000 miles on a 2017 terrain. This is a manufacturers faulty equipment.
- Channahon, IL, USA
The contact owns a 2017 GMC Terrain. The contact stated while driving 30 MPH, the "Low Oil Pressure - Shut Engine Off" message was displayed. The contact was able to pull into his driveway and parked the vehicle. The vehicle was taken to an independent mechanic who diagnosed that the rear main seal had failed, and the failure was related to GM Technical Service Bulletin: 14882. The dealer and the manufacturer were notified of the failure and informed the contact that they could not assist because the VIN was not included in the Technical Service Bulletin. The manufacturer referred the contact to the NHTSA for assistance. The vehicle was not repaired. The failure mileage was approximately 66,000.
- North Reading, MA, USA
The contact owns a 2017 GMC Terrain. The contact stated that after his wife had parked the vehicle, the oil light appeared on the instrument panel. Upon exiting the vehicle, she discovered that oil had leaked onto the ground from underneath the vehicle. The contact was called to the scene and placed oil into the vehicle; however, the oil leaked out after restarting the vehicle. The contact then called a friend who was a mechanic and he discovered that the PCV valve had frozen which caused the rear main seal to fracture. The contact also discovered that oil spilled all over the bottom of the engine. The dealer was notified of the failure and informed him that there were no recalls. The manufacturer was also notified of the failure and referred him to NHTSA. The vehicle had yet to be repaired. The failure mileage was approximately 80,000.
- Elma, NY, USA
Engine started consuming oil at around 90,000 miles. First noticed after a Oil change with the dealer we bought it from. Questioned them about it once we checked the oil, and noticed it being low after experiencing a engine noise. Dealer had us bring it back, refilled it, and test drove it for 20 miles. They sent it back with us, stating it may not have been topped off correctly. Noticed the issue several more times, and told the dealer, they then had us to a oil consumption test. After test was concluded recommended that the piston rings be replaced at a cost of $2202.02. GM first refused coverage even though this is a known issue with Terrains with the 2.4 cyl. engine. Dealer resubmitted to GM rep., Rep. admitted this is a known issue, and that GM is waiting to see if they experience enough complaints to meet the 10% of production number before it is covered 100%. Contacted GM customer complaint line with no luck in getting additional coverage, even though GM extended coverage for earlier models with this issue.
- St Paris, OH, USA
The contact owns a 2017 GMC Terrain. The contact stated while driving approximately 25 mph, the vehicle lost electrical and motive power. The contact was able to restart the vehicle. The contact stated that there was no warning light illuminated. The vehicle was diagnosed but not repaired. The manufacturer was informed of the failure. The contact was still awaiting a response. The failure mileage was approximately 48,850.
- Compton, CA, USA
My check engine light came on along with a a message that states 'reduced engine power' and a message reading 'service stabilitrek when I was driving on the highway at 70 mph. This created suddenly jerking and slow acceleration so that I had to pull off the road. I found a forum at [xxx] that reveals that this has been an issue with GMC modes at least as long as 2011. The duration for which this has been a problem with GMC models, and the fact that stabilitrek is an integral safety feature of the vehicle in avoiding accidents seems to merit a recall. Parts of this document have been redacted to protect personally identifiable information pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).
- Rohnert Park, CA, USA
- Reynoldsburg, OH, USA