GMC Terrain oil consumption problems

Filed Oct 5, 2026 · Engine · 65,000 miles · FL

The contact owns a 2014 GMC Terrain. The contact stated that the exhaust manifold was previously replaced due to an exhaust leak and the vehicle was towed. The contact stated that the vehicle was experiencing excessive oil consumption, and a quart of oil was added every 500 to 1,000 miles, causing an abnormal engine ticking sound and timing chain sound. The check engine warning light was illuminated. The contact retrieved DTC: P0420. The vehicle was taken to an independent mechanic, where the timing chain and catalytic converter were replaced; however, the failure persisted. The contact stated that the engine ran rough and experienced reduced power, and the vehicle was idling rough and the vehicle hesitated while accelerating. The contact became aware of an abnormal oil odor during the failure. Additional trouble codes P0017 and P0420 were retrieved. The failure mileage was approximately 65,000.

Filed Sep 28, 2026 · Engine, Transmission · IN

I bought this 2017 used on XXX I have had to put 1 quart of oil in the car every 500 miles. Because it burns oil like crazy. And now at this point, the transmission has just quit. I believe they call it the drive train. I am taking it to D and D auto repair in [XXX] on Thursday of this week. GMC knows about the drive train problem as it is common well known problem INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 8, 2026 · Engine, Transmission · TX

Having the start stop issue on my terrain and recently over the last few months, it has been using oil everything that sounds exactly like the recall but mine is not included. My start stop is not working and I have to get him since it had only 60,000 miles on it years ago, but nothing was done.

Filed Jun 5, 2026 · Engine, Transmission · NC

My 2016 GMC Terrain 2.4L Ecotec first stalled while idling at a red light in Raleigh, NC. I restarted it and it sounded different, so I drove it home. The next morning it would not start. The failure occurred at approximately 69,939 miles with no meaningful warning. The dealer’s diagnostic report states there were no current relevant codes and no relevant codes in history. The dealer documented major timing-system failure: timing chain tensioner failure, timing chain guide failure, a timing chain guide bolt pulled out of the cylinder head, aluminum contamination in the cylinder head/oiling system, and engine replacement recommended. The vehicle was found unsafe to operate. This vehicle regularly transported my family, including my children. If the stall/no-start failure had occurred at highway speed, while merging, or in heavier traffic, it could have created a serious crash risk. The oil was maintained outside the dealership network and had been serviced before failure. I also topped off the oil shortly before this occurred. The 2.4L Ecotec engine family is known for oil-consumption issues, yet this vehicle gave me no direct warning that oil consumption had reached a dangerous level. A reasonable owner would not know to check oil every day when there were no relevant stored warning codes. Other the federal safety agency complaints involving 2016 GMC Terrain vehicles describe similar patterns: oil consumption, no warning lights, sudden stalling or no-start conditions, timing-chain failure, and engine replacement recommendations. I am filing because this appears to be an ongoing safety risk involving oil consumption without adequate warning, timing-chain/timing-guide failure, internal contamination, and sudden engine failure. I request the federal safety agency review this issue for investigation or recall expansion before this failure mode causes a preventable serious crash, injury, or fatality. The vehicle was inspected by a GMC dealer and remains unrepaired.

Filed Apr 18, 2026 · Engine · SC

I check my oil every time I get gas as to ensure that i don't go below the threshold for the oil, as I know these engines have an oil consumption issue. My terrain started having a loud grinding sound after losing power on the highway and I was able to pull off before the car died completely over 60 miles from home. I have since changed the upstream, and downstream O2 sensors (they needed it), VVT solenoids, and now going to be required to change my catalytic converter because the excessive oil consumption has clogged it almost completely. Why will GM not issue a recall for this engine and get it fixed, when they have knowledge that there is an issue. A recall was issued for previous years (on the same model) having the same issue, but yet we are left to "figure it out" at our own expense? Come on GM and the federal safety agency, get it together and issue a recall already, you have all the complaints, and history you need to start one.

Filed Apr 10, 2026 · Engine, Fuel system · PA

Oil consumption, causing high pressure furl pump to clog. It also causes catalytic converter to clog. No warning of oil loss. Causing stalling out while driving. Caused the engine to seize. New engine replaced and still same problem s

Filed Mar 29, 2026 · Engine · IL

Have had to replace the VVT solenoids several times within a year spam. Had to replace the rear main seal because it blew out due to carbon build up. Having issues with excessive oil consumption. Now the vehicle just started with: going from a stop position to accelerating at low speeds the vehicle stalls and dies. I want GM to take accountability and fix this issue as it is a safety issue to myself and everyone on the road.

Filed Mar 9, 2026 · Engine · MN

The engine blew. This was already the 2nd engine in the car. Oil consumption. Metal in the oil. No signs. Needs new engine

Filed Feb 18, 2026 · Engine · MI

My husband just did an at home oil change on the car not long before the incident. Unfortunately my car was barely under 3,000 miles since the oil change and we were going to change the oil again when my engine died mid drive on the way home. There was no oil in the car due to high oil consumption and no coolant either. High oil consumption was not reported and not disclosed to me before and a broken guide for my timing chain leading to total engine failure just after I started to exit the highway. Had my car died any sooner I would have crashed. Or wrecked with another vehicle. GMC and the dealership I got the car from did not properly disclose this safety risk to me when I purchased the car and no recall information was ever sent out. The high oil consumption causing engine failure has been a part of a class action lawsuit for these vehicles before and THAT was not disclosed to me either at any point. No notifications of low oil or other issues aside from a check engine light came on for my vehicle when I was driving. I dont know how fast I was going as I was applying the brakes to my car for a traffic light.

Filed Feb 17, 2026 · Engine · MD

Carr paused, and then stopped in the middle of the highway, without any warning lights or identifiers. Other vehicles had to come to abrupt stops or even veer to avoid hitting me the manufacturer is aware, and has had a large lawsuit settlement due to a faulty rear seal causes massive internal oil consumption without any warning to the operator of of the vehicle. My research has shown that it is a catastrophic common issue with this vehicles model and year a certified GMC dealership has identified this as the reason for the sudden shut down without warning, not one warning light illuminated to indicate low or any other issue. The car has had regular oil changes and maintenance. This well-known defect should normally be caused for alarm and the safety of drivers would also for a mass recall.