general problems of the 2019 GMC Terrain - part 2

While driving on 95, I lost all engine and power breaks with no warning. A message came up on my dash stating that I had lost engine power. Fortunately an exit was up ahead so I was able to get there and coast down the ramp. I attempted to make a right turn to get out of the way but ran out of momentum. Dealership stated my vacuum break pump failed and went into the cam shaft. They had to replace those and the solenoid actuator and value. They also conducted an oil change. I received it back yesterday, started the car today and the check engine light was on. They found more debris and replaced another point and said if the light comes on again it's the timing chains in the engine. I went out leave and the check engine light was on. They are now keeping it to repair the timing chains. I am fighting with gm to cover the expenses since I see this is an issue in previous models/years of GMC and chevy vehicles.

Brakes got hard all of a sudden locked up, almost hit another car, front collision warning keeps going off and automatically hitting brakes with no one in front of me. I’ve read it could vacuum brake pump failure. Please recall this as many people have kids and could hurt them.

It began with showing "service brake assist" for about 2 weeks + then on Dec 18th 2023 around 10:30 as my fiancé was stopped at a stoplight and all of sudden when the light turned green she attempted to continue forward as traffic started to move only to stall stalled out before any movement could be achieve the battery was reading severely depleted and the vehicle would not function at all she was stuck in drive and could not put the vehicle in neutral or even park to even try to restart the vehicle, she could not even turn the steering wheel, roll down the windows, open the door, or anything. The only thing she was able to accomplish was opening the hood so an officer that had arrived at this time could give her a jump, the officer also proceeded to leave the negative cable on the battery terminal and disconnected the positive cable from the battery terminal which would have indicated a bad starter or depleted battery when the positive cable had been removed, which was not the case. She continued to where her appointment was and that is where I met her and took over vehicle to transport it home, driving with hazards on. I arrived at the house with no incident. Then at 4:45pm on the evening of 12/18/2023 while at the stoplight I had a similar issue occurred as I was going from a stationary position to a forward slowly accelerated speed gaining momentum where the vehicle wanted to stall out while I was stopped at a stoplight attempting to proceed forward. And then at around 10:20 pm while stopped at a stop sign a similar issue occurred as I was going from a stationary position to a forward slowly accelerated speed gaining momentum attempting to proceed forward. On Dec 19th 2023 around 10:00 am I test started the car by remote and it started up and then I turned it off, now it is showing that the battery is completely depleted at 1:26 pm.

My 2019 GMC Terrain, vaccum pump failed at about 45000 miles, was driving on the highway and brakes were hard to stop, almost crashed. About 52000 miles, vacuum pump failed again, also while driving on the highway. Brakes were hard to stop, again almost causing me to crash. 69000 miles again vacuum pump failed while driving on the highway, again almost causing me to crash. All times pump was replaced under warranty and now this has caused my engine to fail. I was denied factory warranty, pre certified and extended warranty. Now im stuck with a car with with three years left to pay on it.

For the third time, the brake booster has failed on our GMC Terrain. We had the first replaced with an oem part. That booster failed after 2 weeks. A second oem brake booster was installed. That one lasted about a year until it failed as well. This time we were traveling down the interstate and interstate speeds. There were no indications of an issue until trying to slow down when attempting to exit the interstate. Luckily it was a long ramp and there was not much traffic as I had to push extremely hard to slow down the vehicle. Knowing immediately what had happened, we noticed a GMC dealership was just down the road and safely made it. We left the vehicle at the dealership and rented a car to continue our vacation. We are now being told that not only did the brake booster fail, but the components entered the engine and caused major damage. The suggested repair is a full engine replacement. This is unacceptable for an issue that GMC has know about and has had recalls for on other years of their vehicles. Not only could my family have been severely injured, or worse, we are not financially able to repair the vehicle.

There are 3 recalls and one open on this car I was sold by a dealership, none of them ever fixed. I drive to work in the highway the car never had any warning light on but the rpms would occasionally go up for no reason. I told the dealership the second day that it had issues , they took it and say they fixed the back brakes but did nothing about the engine or transmission whatsoever ever. This was the beginning of may and it was in the shop two weeks. I called my lender to even get out of the loan and a saleswoman even tried assisting me into talking her manager out of the loan because of all the issues. Fast foreword to August I had just gotten a new job and was driving in the night after hearing that ticking or slight knocking noise and I went to my job and as I tried to park the brakes went completely stiff on me! I could not get the car to slow down I had to weave through other cars and people in till it finally coasted to a stop. So I put it in park and immediately after the check engine light came on. I tried to start it and it would start , putter and turn off over and over. I had to end up calling onstar to have a diagnosis which she said something like solenoid and something being clogged. So it was towed to my residence and before I could get it towed to s shop they lender came and repossessed it because I had missed payments due to losing my job unexpectedly, completely unexpectedly. I told the lender of the problem and the unfortunate troubles I was having to pay for the car but I had just landed a job and could start payment but she didn’t care. She said she is going to tow it . I had my friends dad who is a licensed mechanic look at it before it was towed and he said the car was trash , basically a lemon that there was oil clogged and instead of passing through like it’s supposed to do it being pushed the opposite way and ending up in other reservoirs it shouldn’t be in. I obviously didn’t do that type of damage oil and trans problems I was scammed.

2019 GMC Terrain with 45000 miles, regular maintenance performed. Driving on highway 70mps brakes failed with no warning. No issues with brakes or lights coming on up to this point. Brake pedal became stiff very minimal brake working lights began flashing on dash stating "service brake assist". Barely made it off the highway without a catastrophic collison. Took car in states brake vacuum pump completely failed. Apparently there are many models of GMC/chevy that were recalled and have known issues with the brake vacuum pump. Not sure why the Terrain is not included. It needs to be, this was a very dangerous situation. I had children in the car and was very scary! 600$ to repair, and from reading other reviews the pumps are breaking often, sometimes ruining engines. GMC stand behind your product and fix this!.

When parked in home driveway brake lights came on with no one in car or driven during the day. Only way to turn off brake is to remote start & then cut off engine with fob. Dealer diagnostic unable to find issue & condition didn't occur when at their location.

In July 2022 vacuum pump failed and created a hard brake situation going 55 mph downhill. Vehicle removed from roadway safely, transported and vacuum pump replaced. In may of 2023 vacuum pump again failed driving at around 25mph, vacuum pump failed catastrophically and blew up inside cam cover. Taken to garage via flatbed and reported car needed a new engine or alternatively we could try a new cam and vacuum pump with hopes pieces did not make it into engine. Now vehicle sits while I still owe money as I do not have 3-5000 to repair it. The fact that this is such a common issue and has happened frequently with other gm models is criminal. I feel as if gm should offer a buyback on affected models or reimburse customers for damages done. Vehicle is outside of warranty currently at 83k first vacuum pump failure occurred at around 70k.

The contact owns a 2019 GMC Terrain. The contact stated while driving 10-12 mph and approaching the traffic light, the brake pedal was depressed, but failed to respond and went down to the floorboard. There was no warning light illuminated. The contact stated that she continuously pumped the brakes until the vehicle stopped. The contact veered to the side of the road. The message "low brake fluid " message was displayed, and other unknown warning lights were illuminated. The contact added brake fluid to the vehicle. The contact stated that she turned off and restarted the vehicle. The dealer was notified of the failure and advised the contact to take the vehicle to their location for diagnostics tests. A towing agent informed the contact that the brake caliper was fractured and there was a puddle of brake fluid on the ground. The vehicle was towed to the dealer, where it was diagnosed that the brakes hardware had failed, the brake caliper was fractured, and the brake sensor and actuator had failed. The dealer then informed the contact that the manufacturer was contacted and advised that they would only cover the brake caliper, pads, and rotors replacement. The vehicle was not repaired. The failure mileage was approximately 40,000.

Brake booster failure detected by rumbling sound during braking and certified GMC tech advised of brake booster failure on a 2019 GMC Terrain with only 24k miles.

Accelerating from a stopped position into a busy intersection heard a loud clunk come from engine bay resulting in immediate "reduced engine power" warning and stall condition. Was able to push vehicle onto the side of the road. Engine would not restart and a tow truck was called. Vehicle towed to local dealership who discovered that vacuum pump had failed resulting in sheering off of the exhaust camshaft. Dealers recommended fix was to replace vacuum pump and camshaft at around $4,000 but could not guarantee no debris had gotten into valve body resulting in engine failure so stated they could replace with used engine for 8500. Second vacuum pump to blow on this vehicle, first at 35k miles and replaced under warranty, this incident at just under 80k miles. Could not afford repairs and vehicle has sat for nearly 2. 5 years. Contacted gm many times over that time period to get no assistance, only the offer of a small discount on a new vehicle. This incident could have proven fatal if happening at highway speeds since it stalls engine out and makes braking nearly impossible. Both gm and the nhsta have really flunked on this one, should have been recalled during first complaints in 2020. I will continue to file complaints here on nhsta and with gm until the cows come home.

While driving at the speed limit on u. S. Interstate 83 in pennsylvania, my 2019 GMC Terrain's braking system suddenly, without any warning, became severely limited. The brake pedal suddenly became very hard to press and the my ability to slow or stop the vehicle became very difficult, requiring a great deal of pressure to even slow the vehicle. The braking system worked perfectly until that moment. If I needed to stop quickly or if I did not have as much leg strength, it is highly likely the equipment failure would have directly resulted in a catastrophic crash. I struggled to get the vehicle safely off the road and stopped. I then had it taken to a certified auto mechanic shop. There, it was found the gm vacuum brake booster pump had inexplicably failed, making the "brake assist" function inoperable. The mechanic was surprised gm had a replacement pump in stock, as he said that is not the norm for other brands. A moment after pressing the brake for the first time as the incident began, a message appeared on the dash stating "service brake assist. " there was no pre-failure warning or symptoms. I was in the middle of a 300-mile road trip, having already completed about 220 miles that day, without any notable incident. The cost to replace and install the vacuum pump was about $640.

The contact's client leased a 2019 GMC Terrain from hertz leasing company. The contact stated while her client was driving approximately 60 mph, the brake pedal was depressed but failed to go down and did not respond. The brake assist warning light was illuminated. The contact stated that her client continued driving and allowed the vehicle to decelerate independently. The contact's client then veered to the side of the road. There was no further information provided. The vehicle was returned to hertz leasing company who later informed the contact's client that the vehicle had been diagnosed with brake vacuum pump failure. There was no further information provided. The manufacturer was not notified of the failure. The failure mileage was approximately 42,000.

Brakes failed on my car while driving and ran through 4 way stop. Took car to dealership and was told the vacuum pump seized up and sheared off. Asked the dealership what caused the problem and all they could say was normal wear and tear of the vehicle. Dealership called and said it was going to cost $900 dollars to fix the problem. I asked what that included and they said a new vacuum pump and to clean the motor out. Picked the car up on Monday and by Tuesday evening car would not run. Took it back to the dealership and am now told I need a new cam shaft which cost another $2400 to fix. This is a serious safety concern as I had no warning or received no notification that the brakes had failed just went to stop and could not. How long is GMC going to let this issue go before being addressed. How many people have to die first before they recall them as the have already recalled the bigger models of GMC, Chevrolet, Cadillac and Buick for the same reason? I don’t know how people are suppose to afford to fix an almost brand new vehicle that they are still making payments on. . Something should be done ASAP. . .

I was exiting off the interstate and all of a sudden my brakes got hard and wouldn’t let me stop. I tanned thru a red light barley missing another vehicle. The dealership says my vaccines pump went out and caused it to strip my valve cover gasket to shreds and now has stripped the gears in the camshaft.

I was driving through a four way intersection with my children and the breaks locked up and I couldn’t get to a stop. This was the middle of September: there are multiple complaints on this happening with my model and someone is going to die if it’s not recalled. This is a serious safety concern. There was no warning, or light to prepare me for the problem. Please do something to help us.

Vacuum pump went out while getting off the freeway, going around a roundabout. Brake petal extremely hard to depress and was unable to slow down or stop in a timely manner. Tooke vehicle to GMC for diagnostics and they said the vacuum pump shattered causing damage to my cam shaft and possible engine damage.

After driving down around 40 miles, the brakes failed when pulling into a parking spot. There was no indication that the brakes were having issues. No sounds or vibrations were felt. I stopped at a stoplight before turning into the parking lot. Then when attempting to spot in a parking spot, the brakes were very difficult to press. Luckily there was not a vehicle or person in front of me. Had the vehicle taken to a dealer and was told it was the vacuum booster that failed. Upon researching, this has been an issue in past GMC models, but I was told there was no current recall for the vehicle. The vacuum booster was replaced for $540 and I drove the vehicle home. The vehicle showed no issues for the first day. On the second day, I went to pull into a parking spot at a park and the same issue with the brakes occurred. I nearly struck a child that was walking in front of the parking spot. Luckily I was able to slam the pedal to the floor and come to a stop. Took the vehicle to the mechanic and was told the same part had broke. That part has been fixed again and has been fine for 2 days so far. I'm scared that it will happen again and I will not be able to stop in time before I hurt someone else or my family. This needs to be addressed. And I believe I am owed compensation from the manufacturer.

We were in the driveway thru lane at a fast food restaurant and all of a sudden the car shut off and the brakes got hard to push in. The car was able to be started at this time but the engine wasn’t working well. We were able to make it home, slowly and carefully. We had the vehicle towed to a mechanic and this is what was told to possible increased brake pedal effort due to mechanical engine vacuum pump failure. We had it sent to david's auto service 219-861-0666. This could’ve been a very dangerous accident if we were driving on the expressway or on a regular street going the normal speed limit. Thankfully we were in a drive thru lane.

Our son and two daughters were driving on the highway at approximately 70mph when a message came up to say the engine was in "reduced engine power". Although nothing seemed to change. The instruction for such and error message is to "get vehicle to a dealership within the next day. " so they slowed to 60mph and continued on their way. About 8-10 minutes later another message popped up that said "service brake assist", at which point they immediately tested the brakes and they worked. But 2-5 minutes later they tested the brakes again and the brakes had completely failed! zero brakes on the highway! no matter how hard the driver pushed the brake pedal there was 0. 0% response. So luckily they were able to coast down to about 10 mph with hazard lights on. But at that point they lost everything. No power steering, no engine, and zero brakes. Thank the lord that they were able to have enough room to slow down and get over to a shoulder prior to the loss of power steering and that they had enough room to coast to a stop. Please help, as we were extraordinarily lucky that day that 3 of our children were able to walk away from such a catastrophic vehicle failure. I just do not want that to happen to anyone else.

The contact owns a 2019 GMC Terrain. The contact stated while approaching an intersection, he depressed the brake pedal to the floor however, the vehicle failed to stop immediately. The contact stated no warning light was illuminated. The contact stated that the brake assist activated and stopped the vehicle. The contact was able to continue driving to his residence at a slower speed. The contact towed the vehicle to the local dealer, where it was diagnosed with needing the vacuum pump to be replaced. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 84,400.

My vacuum booster pump for my brakes keeps needing to be replaced. I had to get it replaced twice now & every single time that it stopped working I was driving on the highway at 65 mph and my brakes just suddenly wouldn’t work and we’re very hard to push down. This has happened twice now.

Brakes quit working after service light came on. Vehicle will not stop.

I have been notified that my brake vacuum pump exploded in to my engine, leaving me with limited braking ability. I was driving through a school zone when the brakes went out, I noticed as I was not able to stop at an intersection. This could have led to multiple injuries, including children being in harms way. I had no warning this was coming and now look towards a hefty repair bill. GMC has recalled vacuum pumps in other models but for some reason the Terrain is not included. I wonder if there just haven't been enough deaths caused by faulty brake systems for them to cover this model too.

I received a "service brake assist" message which came on then off. Took the car to a local mechanic who looked it over and said to see dealer as they saw nothing obvious. Internet search revealed that many people with Terrain said this warning came on when battery was low. Made a service appt for NJ dealer for 12/6/21. On 12/3/21, began a 1200 mile drive from florida to NJ, after 2 hours, check engine light came on. Took the exit ramp from I 75 and at end of ramp, there was a total braking failure. I had to press very hard to eventually stop. Shut off car, attempted to restart but it would not. Towed to a mechanic who found fluid leakage and a repair bulletin on gm site involving vacuum seal camshaft. #pip5598a diagnostic tip. Internet search reveals many anecdotal instances of same problem. On Monday, 12/6/21, I received an email from gmac saying that the on board diagnostics had shown a "low battery" concern. The catastrophic loss of braking seems to be connected to a low battery situation. This needs to be looked into by NHTSA.

GMC corporate office general motors company300 renaissance center detroit, mi 48265 to whom it may concern, been a customer with GMC for a good while despite the issues and troubles we were still loyal to the company. October 31,2021 Sunday, I had sudden lost of my brakes/stalled on my 2019 Terrain sle while driving to the store close to my area on top of that having less than 30,000 miles in it. Despite the horrible and devastating event I was able to have the truck without any scratch , hit , or had any accident on this event but instead still safely stopped the car down a hill from where I lost my brakes/stalled. Fast forward Nov 2nd had the truck towed to the milea pontiac Buick GMC service and parts at 3281 e. Tremont bronx new york 10461. Towing company both from picking up the truck and dropping off milea had a hard time since the truck was not starting or even able to be placed in neutral to be able to have the truck roll of the flatbed. Nov 2nd Tuesday 2019 GMC Terrain was dropped off at milea service and parts. 1st issue identified by your crew (sort of technical experts) was a bad battery and needs to be replaced, 2nd problem was the computer need to be replaced, 3rd problem was that I had put bad gas into the tank and the fuel pump need to be replaced after 9 days so fast forward now to Nov 9, 2021. Now finally spoke to a mechanic now stating pistons doesn’t seem to be firing but does not have proper tools to do the test is trying to get from another dealer to be able to diagnose the problem. Nov 20, 2021, still no news as to what is the real issue on the truck we again visited the milea to find out what is the deal and still without a truck from Nov 2nd to Nov 20 still yours truly has no loaner and no written nor verbal confirmation of what really cause my lost of my brakes/stalled truck. Linda cuomo the milea representative has nothing to inform us regarding the cause and instead waiting for a specialist from out of town which claims to be the e.

Driving down load. Brake pedal got stiff as a rock. Brakes started to lock up. Almost caused a collision, as the car would not stop.