My car has started stalling and dying when i slow down, take off or when idling. No power when accelerated, and the smell of exhaust comes into my car. I was making a turn from a red light and my car spit, sputtered, and died right in the middle of the busy intersection. I was almost hit from the rear and another car had to go into on coming traffic to avoid T boning me. I took it to 2 different places to get a diagnosis reading and both places said it was a catalyst problem, and I was told that there was a recall about that because of engine oil clogging it up. My car has been using more oil than usual here lately and im guessing thats why. Now, im afraid to drive anywhere because I don't feel like it safe and the fact that my car doesn't run good enough to drive. I was told by more than 1 person that knows mechanics, that its a issue with the catalyst and that it had a recall on it but I never received one. This is a very concerning safety issue, and one that needs immediate attention before someone gets badly hurt (or worse) because of a bad car part . My car is literally just a lawn ornament now until I can get this issue resolved. I need my car to make a living and support my family. PLEASE, get the recall letters out and get this fixed before someone loses a life.
The worst 2012 GMC Terrain problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine173
- Visibility81
- Transmission37
- Electrical32
- Fuel system29
- Airbags25
- Driver assistance16
- Body12
- Acceleration11
- Lights10
- Seat belts9
- Steering7
- Brakes5
- Wheels5
- Seats4
- Suspension4
- Tires1
Specific symptoms reported on the 2012 GMC Terrain
Wipers 77Oil consumption 75Check engine light 48Stalling 47Engine failure 24Loss of power 21No deployment 15Jerking 12Knocking 11Won't start 11Fire or smoke 8Headlights 8Misfire 7Seat belt 7Ball joint 6Screen failure 5Key fob 5
Trouble codes owners of the 2012 GMC Terrain mention
P0014 2P0300 2
Recalls 4
Exterior lighting: headlights
- What is wrong
- General Motors, LLC (GM) is recalling certain 2010-2017 GMC Terrain vehicles. A reflection caused by the headlight housings may illuminate areas above the vehicle and outside of the driver's view with excessively bright light. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
- Risk
- The bright reflection may cause a glare for other drivers, reducing their visibility and increasing the risk of a crash.
- Remedy
- Dealers will install headlamp appliques, free of charge. Owner notification letters were mailed September 8, 2022. Owners may contact GMC customer service at 1‑800‑462‑8782. GM's number for this recall is N222363740.
Recall number 22V137000 · Recall details
Electrical system: ignition
- What is wrong
- General Motors LLC (GM) is recalling certain model year 2016-2017 Buick Verano and 2016 Chevrolet Malibu as the electronic park lock lever may allow the ignition key to be removed without the transmission being in PARK. Also, certain 2013 Buick Encore, 2011 Buick Regal, 2013-2014 Buick Verano, 2011-2016 Chevrolet Cruze, 2010-2013 Chevrolet Equinox 2013-2015 Chevrolet Malibu, and 2011-2013 GMC Terrain vehicles may have been serviced with similar defective replacement electronic park lock levers. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 114, "Theft Protection and Rollaway Prevention."
- Risk
- If the key is removed without the transmission in PARK, the vehicle may rollaway as occupants are exiting, increasing the risk of injury.
- Remedy
- GM will notify owners, and dealers will inspect and if necessary replace the key cylinder lock housing, free of charge. The recall began on October 14, 2016. Owners may contact Chevrolet customer service at 1‑800‑222‑1020, Buick 1‑800‑521‑7300, and GMC 1‑800‑462‑8782. GM's number for this recall is 50490 and 50491.
Recall number 16V502000 · Recall details
Seats: front assembly: power adjust
- What is wrong
- General Motors LLC (GM) is recalling certain model year 2011-2012 Buick LaCrosse, Regal and Chevrolet Camaro, as well as certain 2010-2012 Cadillac SRX, Chevrolet Equinox and GMC Terrain vehicles, equipped with power height adjustable driver and passenger seats. In the affected vehicles, the bolt that secures the driver's and passenger's power front seat height adjuster may fall out causing the seat to drop suddenly to the lowest vertical position.
- Risk
- If the driver's seat unexpectedly drops, the distraction and altered seat position may affect the drivers' control of the vehicle, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will replace the height adjuster shoulder bolts, free of charge. The manufacturer distributed interim letters to owners on September 11, 2014. The recall began on December 26, 2014. Owners may contact GM customer service at 1‑800‑521‑7300 (Buick), 1‑800‑458‑8006 (Cadillac), 1‑800‑222‑1020 (Chevrolet), or 1‑800‑462‑8782 (GMC). GM's number for this recall is 14271.
Recall number 14V447000 · Recall details
Tires: pressure monitoring and regulating systems
- What is wrong
- General motors (gm) is recalling certain model year 2012 chevrolet equinox and gmc terrain vehicles, manufactured from july 18, 2011, through september 6, 2011, for failing to comply with the requirements of federal motor vehicle safety standard number 138, "tire pressure monitoring system" (TPMS). The tire pressure monitoring system is designed to illuminate the tire pressure warning light when the pressure in a tire is 25% below the recommended cold tire pressure. On these vehicles, the light will not illuminate until the tire pressure is more than 25% below the recommended cold tire pressure.
- Risk
- Underinflated tires can result in tire overloading and overheating, which could lead to a blowout and possible crash. The resulting crash could cause serious injury. Underinflated tires can also result in premature or irregular wear, poor handling, and poor fuel economy.
- Remedy
- Gm dealers will update the body control module free of charge. The safety recall is expected to begin on or about november 9, 2011. Owners may contact chevrolet at 1‑800‑630‑2438 and gmc at 1‑866‑996‑9463.
Recall number 11V511000 · Recall details
See all 4 recalls for the 2012 GMC Terrain
Defect investigations
Momentary Increased Steering Effort
On June 1, 2020, the Office of Defects Investigations (ODI) opened PE20-009 to investigate instances of a momentary increase in steering effort after the vehicle is driven in a straight line for a period of time due to an issue with the steering gear in model year (MY) 2010 through 2012 Chevrolet Equinox and GMC Terrain SUVs.If the electric power steering system fails to operate as intended, the driver will experience momentary increased effort when attempting to turn the steering wheel from the straight-ahead position. For this condition to occur, the driver would need to have traveled in a straight line at a sustained high speed, without turning the steering wheel, for approximately 30 minutes or longer. The steering gear contains a servo unit that includes a worm gear with a worm and a worm wheel. General Motors (GM) stated that the primary root cause of the increased steering effort is the supplier's inconsistent application of grease in the interface between the worm and the worm wheel. The grease may have been applied in a location on the worm wheel that didn't interface with the worm, depriving the worm gear of proper lubrication.On November 1, 2014, GM issued Special Coverage 14232 to address the power steering stick-slip issue in MY 2010-2014 Chevrolet Equinox and GMC Terrain; MY 2011-2014 Chevrolet Cruze and Volt; MY 2012-2014 Buick Verano; and MY 2013-2014 Chevrolet Malibu vehicles. GM notified consumers via mail.The Special Coverage repair includes the replacement of the steering gear with an improved internal worm gear greasing process for MY 2010-2012 vehicles. For the MY 2013-2014 vehicles, the Special Coverage repair includes a reprogramming of the steering gear control module. The new software has an anti-stick feature which senses and reduces the friction between the worm and worm wheel by oscillating the worm gear. GM stated that the difference in remedy is due to the inability of the MY 2010-2012 steering gear control module to accept the new software.The remedy implemented in GM Special Coverage 14232 appears to be sufficient in addressing the safety-related concerns of this issue. Considering the low complaint and warranty rates of steering rack replacement as well as the field exposure time for the subject vehicles, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. ODI has not identified a safety defect or defect-related failure trend in the subject vehicles. In view of the Special Coverage, low rate of failure, and low potential hazard to drivers, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at under the following identification numbers:11424633,11421725,11229647,11101375,10919921,10689932,10671557,10664687,10663350, 10593429,10592065,10585476,10585365,10576237,10575693,10532766,10490295,10434128, 10417845,10412535,10403168,10395532,10395171,10391948,10384211,10375515,10366297, 10360999,10360599,10345626,10319530,10305569,10304769,10299745
PE20009
Front Wiper Transmission Inoperative
On December 13, 2019, the Office of Defects Investigation (ODI) upgraded RQ18-002 to an Engineering Analysis (EA19-005) to further assess the MY2010-2016 Chevrolet Equinox and GMC Terrain windshield wiper failures. Due to a prior recall, 16V‑582, addressing this issue in the MY2013 subject vehicles, MY2013 was not included in the analysis. To date, ODI had received 998 complaints with allegations of the front windshield wiper failing in adverse whether conditions, while the vehicle was in motion.General Motors (GM) initiated Safety Recall 16V‑582 on August 3, 2016 to address windshield wiper failure in the Model Year (MY) 2013 Chevrolet Equinox and GMC Terrain. Failures were attributed to water and debris intruding into the windshield wiper assembly ball joints, leading to excessive wear and eventual detachment of the affected ball joint resulting in loss of windshield wiper function. ODI?s review focused on 2010-2012 and 2014-2016 Equinox and Terrain vehicles. Owners were reporting a high rate of failures of the windshield wiper system. These failures were the same as that addressed by recall 16V‑582. ODI's review of data supplied by GM as well as its own confirmed a high failure rate in model years 2014 and 2015. On March 17, 2022, GM filed a defect information report recalling all MY2014-2015 Chevrolet Equinox and GMC Terrain vehicles to remedy the potential failure of the front windshield wiper transmission assembly.General Motors is also conducting a special coverage program, N192266181, for MY2010-2012 and MY2016-2017 Chevrolet Equinox and GMC Terrain vehicles. The special coverage is for a period of 15 years or 200,000 miles, whichever comes first.Both the recall, 22V‑165, and the special coverage program, N192266181, address windshield wiper system failures on the subject vehicles. The dealership will inspect the front wiper assembly for ball joint wear. Depending on the degree of wear, the wiper links will be replaced, and a water shield installed or the entire module will be replaced.In view of the recall and special coverage, ODI is closing this Engineering Analysis (EA). the federal safety agency reserves the right to take additional action if warranted by future circumstances.The ODI complaints cited above can be viewed at under the following ODI identification numbers in a separate attachment.
EA19005
Windshield Wiper Transmission Failure
On November 2, 2018, the Office of Defects Investigation (ODI) opened a Recall Query (RQ18-002) to assess the scope of Recall 16V‑582.General Motors (GM) initiated Safety Recall 16V‑582 on August 3, 2016 to address windshield wiper failure in the Model Year (MY) 2013 Chevrolet Equinox and GMC Terrain. Failures were attributed to water and debris intrusion into the windshield wiper assembly ball joints, leading to excessive wear and eventual detachment of the affected ball joint with an attendant loss of windshield wiper function. The recall remedy addressed these conditions with the installation of an improved windshield wiper motor/transmission assembly and the relocation of a drain hole on the Air Inlet Panel at the base of the windshield.RQ18-002 was opened to assess windshield wiper failure rates in the MY 2010-2012 and MY 2014 - 2016 Equinox and Terrain (subject vehicles).During the course of the investigation, ODI received additional consumer complaint traffic bringing its total to 602 concerning the alleged defect in the subject vehicles. In their December 20, 2018 response to ODI's Information Request (IR) Letter, GM reported 1,303 complaints related to the alleged defect in the subject vehicles. Together, these bodies of data correspond to 1,905 unique Vehicle Identification Numbers (VIN).GM stated the recalled vehicles exhibited double the warranty rate and five times the complaint rate of the subject vehicles and that continuing complaint traffic concerning the alleged defect in the subject vehicles stemmed from publicity surrounding Recall 16V‑582.ODI's review of GM's data confirms the stated difference in failure rates between the recalled and subject vehicles. However, ODI believes that the subject vehicle failure rates are nevertheless elevated and that publicity alone cannot account for the continued consumer complaint traffic concerning the alleged defect in the subject vehicles. ODI is upgrading to RQ18-002 to an Engineering Analysis to compare subject vehicle failure rates and engineering practices to those in peer vehicles.The 602 ODI complaints cited can be viewed in a separate attachment.
RQ18002
Technical service bulletins for the 2012 GMC Terrain 1,842
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- This document provides the technician with a diagnostic tip if the vehicle stalls and set diagnostic...
- This preliminary information communicates information about how to determine if a wheel and tires size...
- This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a...
- This Preliminary Information communication provides information to the technician about vehicles that have...
- New Vehicle Monitoring Programs Section in IVH
- This Preliminary Information communication provides information to the technician about vehicles that have...
- This service bulletin provides information on Tire Sidewall Irregularities.
- This service bulletin provides information on replacing the intake manifold when the engine is replaced...
- This Preliminary Information communication provides information to the technician about the use of...
2012 GMC Terrain fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 2.4L 4‑cyl | FWD | 22 | 31 | 26 |
| 2.4L 4‑cyl | AWD | 20 | 28 | 23 |
| 3.0L 6‑cyl | FWD | 17 | 24 | 20 |
| 3.0L 6‑cyl | AWD | 16 | 23 | 19 |
What 2012 GMC Terrain owners say
Most recent owner complaints, unedited.
The engine blew. This was already the 2nd engine in the car. Oil consumption. Metal in the oil. No signs. Needs new engine
The oil is depleting every month from the vehicle. Every 2-3 weeks I have to put oil in the vehicle because the oil is being absorbed. Is there a recall on this problem.
1. The engine suddenly lost power while driving during evening rush hour and the vehicle would no longer accelerate. 2. Because the vehicle could not maintain speed, I was unable to keep up with traffic, creating a serious safety hazard that could have resulted in a major accident. 3. The vehicle has been inspected by an independent service center for diagnosis. 4. During the incident, the “Engine Power Reduced” warning indicator illuminated just before the loss of power occurred. 5. As the vehicle slowed and came to a complete stop at an intersection, it remained unresponsive. When the traffic light turned green, the vehicle would not accelerate at all.
Liftgate automatically closing and failure to remain open causing a safety hazard for anyone standing at the liftgate.
The contact's uncle owns a 2012 GMC Terrain. The contact stated that while driving 34-35 MPH, the vehicle stalled. There was no warning light illuminated. The contact was able to pull over to the side of the road and allowed the vehicle to cool down. The contact drove to the residence under 15 MPH. The vehicle was taken to the dealer, where it was diagnosed that the variable valve timing chain was bent, and the dealer determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 100,000.
GMC Consumer Relations Subject: Structural Undercarriage Safety Defect – 2012 GMC Terrain SLE Vehicle Information: Year/Make/Model: 2012 GMC Terrain SLE VIN: [XXX] Mileage at Purchase: 148,305 Date of Purchase: [XXX] Location: Rochester, New York I am filing a complaint regarding a severe undercarriage safety defect in my 2012 GMC Terrain SLE. The rear undercarriage of this vehicle shows heavy structural corrosion on suspension brackets and mounts. The condition produces clanging noises during normal driving, and an independent licensed mechanic has refused to work on the vehicle because the suspension integrity is unsafe. When I returned the vehicle to the dealer, I observed additional brackets being attached under the rear subframe area, suggesting reinforcement of compromised structural points. This confirms that the corrosion directly affects suspension geometry, alignment, and stability. This corrosion is not cosmetic. It is advanced structural deterioration affecting the mounting points for trailing arms and lateral links. These components are critical to safe turning, stability, and control. The corrosion compromises the ability of the suspension to keep the wheels aligned, creating serious risks of loss of control or wheel separation. What makes this more alarming is that the vehicle passed a New York State safety inspection on 07/13/2025, yet within days a mechanic refused to perform unrelated service because of the undercarriage condition. This raises questions not only about inspection validity, but also about the underlying durability and corrosion. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2012 GMC Terrain. The contact stated that while the vehicle was parked in the garage, the front driver's side air bag unexpectedly deployed without an impact to the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was 148,116.
I have excessive oil consumption. I noticed the issue after getting my 3000-mile oil change. The technician said I only had 1 quart of oil, which I thought was extremely low. Every 2000 miles, my oil dipstick reports abnormally low oil levels. I am concerned that when I go on an extended road trip, I will have engine issues that will leave me and my family stranded on the side of the road. The GM technician started tracking my oil consumption. He said he was doing that to prove to GM that they owe me a new engine. I didn't understand what he meant until I saw a lawsuit my vehicle was part of.
Car burns oil bad . Got an oil change and it only took 12 days to go dry with no oil
Compare the 2012 GMC Terrain
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Other model years
201020112012201320142015201620172018201920202021202220232024202520262027
Questions about the 2012 GMC Terrain
Is the 2012 GMC Terrain reliable?
Owners have filed 364 complaints about the 2012 GMC Terrain, 1.6 times a typical Terrain model year.
What is the 2012 GMC Terrain year score?
The 2012 GMC Terrain scores 55 out of 100 (below average). The score compares it with the other model years of the GMC Terrain: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2012 GMC Terrain?
Engine and cooling, with 173 complaints, typically around 87,228 miles. Next is visibility (81).
How many recalls does the 2012 GMC Terrain have?
4 recalls, covering exterior lighting, electrical system and seats.
What gas mileage does the 2012 GMC Terrain get?
Official estimates for the 2012 GMC Terrain range from 19 to 26 mpg combined. The most efficient version (2.4L 4-cyl, FWD) gets 22 city and 31 highway.
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