2017 GMC TERRAIN

ENGINE

I was driving back from out of state and all the sudden the engine just got loud. So I pulled over and check oil levels. Except there is no access to the transmission oil. The only way to check this is to remove the front driverside tire, take a bolt out and see if any oil drips out. This is insane that there is no dip stick. I am taking it to a mechanic on Monday but to not have quick access to this is wild.

POWER TRAIN

Throttle position system all of a sudden went bad. My 2017 Terrain started shaking. I was holding up traffic. The sun couldn't go over 5mph. I've read online where this is happening alot in 2010'2017 GMC Terrains.

FUEL/PROPULSION SYSTEM

Throttle position system all of a sudden went bad. My 2017 Terrain started shaking. I was holding up traffic. The sun couldn't go over 5mph. I've read online where this is happening alot in 2010'2017 GMC Terrains.

ENGINE

Throttle position system all of a sudden went bad. My 2017 Terrain started shaking. I was holding up traffic. The sun couldn't go over 5mph. I've read online where this is happening alot in 2010'2017 GMC Terrains.

EXTERIOR LIGHTING

I looked up my recall on my vehicle about my headlights being recall. Never received any information there was a recall.

ENGINE

GM recently recalled over 500,000 car engines. The warning signs to look out for was a “knocking” sound coming from the engine. I had recently experienced the same issues that the recalled car engines were experiencing. I went to get it checked out and my mechanic said there were chunks of metal in the engine. The GM engine recall should include 2017 GMC TERRAINS SLT. If I had not got it looked at, it would have caused an accident that would have been unpreventable due to the warning signs of only the knocking sound. No other lights had came on in the car. Please consider putting this make and model in the engine recall! If someone reaches out to me, I have the name of my mechanic that can verify the engine issue of my GMC.

ENGINE

March 1, 2025, I was driving from Charlotte, NC east bound on highway 40 towards Wilmington and all of a sudden my car just stopped while I was in the left lane. I was able to cruise over to the right shoulder and park my car in front of a sign that read exit 298 a few feet ahead. From there I was on the highway about two hours trying to get a tow truck to tow my 2017 GMC Terrain to the nearest GMC dealership which so happened to be 10 miles away. Which the tow never came. My step father drove about 100 miles west to pick me and my daughters up. All night I was on the phone with one tow truck company after another and every one kept saying they couldn’t find my car. In the morning I called another tow and he was able to find my car in the same location I left it. It was a Sunday so I had to wait until Monday to follow up with GMC Thompson. They advised I needed engine work. I was told I needed, timing chains, compression, gear bolts. However my car had just been repaired in November 2024, because my car wouldn’t start up after work. GMC in Charlotte Liberty GMC they replaced the gasket, chains, pipes, pistons, bolts, screws, seals, valves, bearings, actuators, tensioners, manifold, I mean the engine was rebuilt basically. It Thompson GMC about month to repair the vehicle because they were waiting for parts. The last week Lisa my representative was able to get me a loner car. I’ve been driving the car for about almost 3 weeks and I’m still very Leary of it. Terrible experience and I don’t see any recalls for my year make and model but I believe I’m probably not the only one with this year make and model that has gone through this. There’s two dates so I’m not sure which date to put.

UNKNOWN OR OTHER

1st time - rear main seal blew out & engine lost all of its oil causing rocker arm to break & chains to slip-vehicle sputtered & DIED while driving down busy street & would not restart - my safety & safety of others driving behind me were at risk for causing a rear end accident and/or pile up crash - no warning lights or sounds alerted me - dealership told us General Motors is aware this is/has been a problem with 2017 Terrain vehicles especially those driven in Midwest states due to colder temperatures - the intake manifold vent hole is not large enough to let air out, so it plugs up & causes pressure to blow out rear seal, which causes oil to leak out and engine dies. When replaced with a remanufactured engine intake manifold vent hole was not drilled out causing it to happen again 2nd time - when leaving parking spot at work noticed oil puddles underneath my vehicle, I checked my oil, it showed full, I was concerned, drove to nearby last place I got my oil change. They informed me that all the oil had leaked out and showed me the bottom of my vehicle oil covered the front to the back of my vehicle. They also said that I was extremely lucky to get to shop before engine blew and stopped dead. AGAIN my safety and safety of others behind me could have been a rear end accident and/or car pileup crash - again no warning lights or sounds alerted me - shop personal told me General Motors is aware this is/has been a problem with 2017 Terrain vehicles especially those driven in Midwest states due to colder temperatures - even though the repairs where done by a certified dealership the first time they replaced with a remanufactured engine but failed to drill out the intake manifold vent hole bigger so this would not happen again BUT IT DID. General Motors cannot just sell vehicles it has to stand behind what they sell which in my case they have not. Due to GM lack of concern, recalls, reimbursements, lives have been and continue to be at risk

FUEL/PROPULSION SYSTEM

1st time - rear main seal blew out & engine lost all of its oil causing rocker arm to break & chains to slip-vehicle sputtered & DIED while driving down busy street & would not restart - my safety & safety of others driving behind me were at risk for causing a rear end accident and/or pile up crash - no warning lights or sounds alerted me - dealership told us General Motors is aware this is/has been a problem with 2017 Terrain vehicles especially those driven in Midwest states due to colder temperatures - the intake manifold vent hole is not large enough to let air out, so it plugs up & causes pressure to blow out rear seal, which causes oil to leak out and engine dies. When replaced with a remanufactured engine intake manifold vent hole was not drilled out causing it to happen again 2nd time - when leaving parking spot at work noticed oil puddles underneath my vehicle, I checked my oil, it showed full, I was concerned, drove to nearby last place I got my oil change. They informed me that all the oil had leaked out and showed me the bottom of my vehicle oil covered the front to the back of my vehicle. They also said that I was extremely lucky to get to shop before engine blew and stopped dead. AGAIN my safety and safety of others behind me could have been a rear end accident and/or car pileup crash - again no warning lights or sounds alerted me - shop personal told me General Motors is aware this is/has been a problem with 2017 Terrain vehicles especially those driven in Midwest states due to colder temperatures - even though the repairs where done by a certified dealership the first time they replaced with a remanufactured engine but failed to drill out the intake manifold vent hole bigger so this would not happen again BUT IT DID. General Motors cannot just sell vehicles it has to stand behind what they sell which in my case they have not. Due to GM lack of concern, recalls, reimbursements, lives have been and continue to be at risk

ENGINE

1st time - rear main seal blew out & engine lost all of its oil causing rocker arm to break & chains to slip-vehicle sputtered & DIED while driving down busy street & would not restart - my safety & safety of others driving behind me were at risk for causing a rear end accident and/or pile up crash - no warning lights or sounds alerted me - dealership told us General Motors is aware this is/has been a problem with 2017 Terrain vehicles especially those driven in Midwest states due to colder temperatures - the intake manifold vent hole is not large enough to let air out, so it plugs up & causes pressure to blow out rear seal, which causes oil to leak out and engine dies. When replaced with a remanufactured engine intake manifold vent hole was not drilled out causing it to happen again 2nd time - when leaving parking spot at work noticed oil puddles underneath my vehicle, I checked my oil, it showed full, I was concerned, drove to nearby last place I got my oil change. They informed me that all the oil had leaked out and showed me the bottom of my vehicle oil covered the front to the back of my vehicle. They also said that I was extremely lucky to get to shop before engine blew and stopped dead. AGAIN my safety and safety of others behind me could have been a rear end accident and/or car pileup crash - again no warning lights or sounds alerted me - shop personal told me General Motors is aware this is/has been a problem with 2017 Terrain vehicles especially those driven in Midwest states due to colder temperatures - even though the repairs where done by a certified dealership the first time they replaced with a remanufactured engine but failed to drill out the intake manifold vent hole bigger so this would not happen again BUT IT DID. General Motors cannot just sell vehicles it has to stand behind what they sell which in my case they have not. Due to GM lack of concern, recalls, reimbursements, lives have been and continue to be at risk

ENGINE

The contact owns a 2017 GMC Terrain. The contact stated while starting the vehicle, there was an abnormal sound coming from the engine, especially during colder mornings. The vehicle was taken to an independent mechanic, where it was diagnosed that the solenoids had failed and needed to be replaced. The vehicle was repaired. The contact stated that on a separate occasion, while driving 30 MPH, the vehicle stalled. The vehicle was towed to the residence. An independent mechanic diagnosed the vehicle at the residence and determined that the timing belt was damaged and needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 85,000.

ENGINE

I am writing to formally express my dissatisfaction with my 2017 GMC Terrain, which has experienced severe engine failure due to excessive oil consumption. I purchased this vehicle with the expectation of reliability and durability, yet at only 80,000 miles, the engine seized without warning, rendering my vehicle completely inoperable. I have consistently maintained my Terrain according to the manufacturer’s recommended service schedule. However, I recently discovered that the engine was consuming oil at an alarming rate of 1 quart per 1,000 miles, which ultimately led to catastrophic failure. There were no warning lights or clear indicators of low oil, making it impossible for me to prevent the damage. After researching, I have found that numerous other GMC Terrain owners have reported similar excessive oil consumption issues, indicating a potential widespread defect in this engine design. As a loyal GM customer, I am extremely disappointed that a well-maintained vehicle would suffer such a failure at a relatively low mileage. Given the severity of this issue, I request that GM take responsibility for this defect by covering the full cost of engine repair or replacement. A vehicle should not require a complete engine overhaul at 80,000 miles due to a known design flaw. Please provide a prompt resolution to this matter. If GM is unwilling to address this issue, I will have no choice but to explore other options, including filing a complaint with the National Highway Traffic Safety Administration (NHTSA) and seeking legal counsel. I hope to resolve this matter amicably and look forward to your timely response.

ELECTRICAL SYSTEM

Today is [XXX]. 3 days ago my infotainment system my plug-in lighter charger all of them that's in the vehicle and my rear windshield wiper and my blinkers all went out at the same time. I had a licensed mechanic that has the fuse Checker tool, checked every fuse that he can see under the hood and on the inside of the vehicle and all the fuses lit up. I then went to O'Reilly's Auto Parts here in Highland Park Michigan bought the Savannah long life two pack bulbs for the rear blinkers and they still did not work they would not come on the brake lights would not come on nothing comes on. I then told a gentleman named Frank at that O'Reilly's about the issue about how all those components went out at the same time and he said there was currently a recall about those issues on my year making model of my GMC Terrain which is a 2017 I cannot locate that recall. The only recall I can locate is the one that describes the high beam on the headlights and that is it. So I don't know where that recall is he's talking about I don't know anything about fixing cars I just need some answers. I'm hoping someone will be able to locate the recall that he's talking about so I can have my vehicle looked at and get the issue resolved. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

ENGINE

As per several other complaints on the GMC terrain of particular years my vehicle has had a rear main seal leak, a blown engine terrible amounts of oil consumption and now the second engine has malfunctioned. And made the vehicle inoperable. The safety of myself and others was put at risk as the vehicle lost all power and cut off. The problem has had class action lawsuits filed. The first time the engine failed no warnings came on the second time a reduced engine power came on that we had no idea existed. The vehicle consumed oil very quickly, with in days the oil could need replaced. Oil consumption has been going on for years. Even after replacing engine.

ENGINE

DETAILS: Frozen/clogged PCV in the intake manifold caused the rear main seal to burst due to crankcase pressure, leading to complete engine failure. The 2.4 EcoTech engine must be entirely replaced. GMC refuses to act despite being well aware of this consistent issue. There is a class action lawsuit, service bulletins and multiple examples of this scenario all over the internet. RESOLUTION NEEDED ASAP. - 1/20/25: While driving home from my night shift at highway speeds, exhaust fumes entered the cabin, followed by a loud pop and sudden engine failure. The check engine light never came on and the vehicle would not restart. After towing to the dealership, they confirmed what occurred and noted that it happened on the coldest night of the year, consistent with the well-documented defect in the 2.4L EcoTech engine. They estimated replacement cost can run up to $10,000 and is my responsibility, advising that GM takes no liability for this known issue. This is not an isolated incident for this engine. GM is fully aware of this defect evidenced by multiple service bulletins, including TSB GMC 19-NA-021, which explicitly states this issue is known for ALL 2010-2017 GMC Terrains. Despite this when I called GM for a resolution, I was told my VIN is somehow excluded, making me ineligible for assistance. Instead of taking responsibility, GM directed me to NHTSA, claiming they alone can update affected VINs. This is NHTSA and GM’s failure, not mine. - This situation is completely unacceptable. GM must immediately resolve this issue in one of the following ways: 1. Full engine replacement at no cost to me. 2. Complete payoff of my remaining loan balance. Additionally, NHTSA must provide an explanation for why my VIN is not included in their list of affected vehicles and correct this oversight immediately. - I will not accept further delays, deflection, or excuses. GM must take full responsibility for this failure and respond immediately with a resolution.

ENGINE

While driving on a county highway during an extreme cold front, the vehicle experienced catastrophic engine failure due to low oil pressure. There was traffic that was impacted by this issue and the occupants (mother and child) were stranded in dangerous temps. This issue has been confirmed by a mechanic shop the vehicle was towed to. No warning from vehicle given, regular oil changes and vehicle maintenance performed. It is my understanding this is a known issue with this motor as far as oil consumption, faulty piston and piston ring assemblies and there have been class actions filed for these vehicles.

ENGINE

The contact owns a 2017 GMC Terrain. The contact stated while driving at an undisclosed speed, the vehicle stalled with no warning light illuminated. The vehicle was able to be restarted. The vehicle was taken to an independent mechanic, but was not diagnosed or repaired; however, the contact was informed that the engine oil levels were low, and oil was added to the engine by the mechanic. The contact stated while driving at an undisclosed speed the failure persisted. The contact stated that while the vehicle was parked, the contact stated that the oil level was low, and the engine was not consuming oil. The contact also noticed oil leaking from the bottom of the engine compartment. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 100,000.

UNKNOWN OR OTHER

Hole for timing chain guide bolt damaged by failed guide bolt

ENGINE

Hole for timing chain guide bolt damaged by failed guide bolt

ENGINE

While driving home from work in single digit temperatures on Monday 01/20/25 the engine of my 2017 GMC Terrain stalled without warning at a traffic light. I was able to restart the vehicle and drive it the 1.5 miles home. When I exited the vehicle I noticed a trail of oil leading up the driveway into the garage. Oil continued to leak from the vehicle in the garage, and we had it towed the next day. Righter’s Auto Repair found the rear main seal had blown due to a frozen PCV system that GMC is well aware of and subject to TSB 5093c.The vehicle only has 64,856 miles.

ENGINE

The contact owns a 2017 GMC Terrain. The contact stated while driving at an undisclosed speed, the contact discovered that there was an oil leak. No warning light was illuminated. The vehicle was taken back to the residence and the contact self-diagnosed the vehicle and was able to confirm that there was an oil leak, and the oil leak was coming from the rear main seal. A dealer was not contacted. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 115,000.