2021 Jeep Grand Cherokee L engine problems

Filed Oct 26, 2026 · Engine, Transmission · 53,331 miles · NC

The contact owns a 2021 Jeep Grand Cherokee L. The contact stated that three times while driving approximately 60 MPH, the vehicle lost automotive power. The message “Service Transmission” was displayed. The vehicle was taken to a dealer where it was diagnosed, and the contact was informed that the failure could not be duplicated. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 53,331.

Filed Oct 11, 2026 · Engine · KY

What component or system failed or malfunctioned, and is it available for inspection upon request?- Left and Right 3.6L Engine Mount. Vehicle purchase 7/23/2021. Yes available for inspection. How was your safety or the safety of others put at risk?-The failed engine mounts are a safety concern because the mounts premature wear causes the engine to move which can damage other vital components of the vehicle. The excessive engine movement can cause damage to steering, drive train, fuel cooling, and electrical components, which could lead to loss of vehicle control, or a breakdown. If the mount fails completely, the engine can shift enough to affect shifting, steering, or throttle operation increasing the risk of a crash. Has the problem been reproduced or confirmed by a dealer or independent service center? Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The dealer has inspected it each time that I sent it for a oil change, but diagnostic was not completed until April 2026. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear?-The symptom of rumbling, vibration appeared 4 years ago and has worsened in the last year.

Filed May 14, 2026 · Electrical, Engine · TX

My AC compressor and condenser have stopped working without any reason. The air conditioner does not work at all, it does not make the air cold and the heat in [XXX] is lethal. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 25, 2026 · Engine · ID

I was driving my vehicle home after a nearby out of town errand. I was on US-95 between Potlatch ID and Moscow ID which is a very hilly, curvy 2-lane 60mph highway with little to no cell service. As I ascended my first big hill, my engine light came on flashing and the ride became noticeably bumpy. I could not call anyone for many miles yet, so I put on my safety hazards and continued driving, hoping to make it to town. With each hill my car became more unstable and seemed to be struggling to accelerate. Once I had cell service just outside of Moscow I called my husband to tell him what was happening, where I was at and proceeded to head to an auto repair shop. Once I drove into Moscow, my car was incredibly shaky and noisy and the engine seemed to struggle to stay engaged at stop lights. I brought it to Hive auto repair and they told me that my engine was misfiring, but that they would run a level 1 diagnostic that day. When they called with the results, they confirmed the following information: Scanned for DTCs and found P0301 - Cylinder 1 Misfire Detected. On this 3.6L engine, Cylinder 1 is located beneath the intake manifold, requiring intake removal for further access and testing.-- I continued to level 2 inspection and removal of the manifold which showed significant problems within the engine at Cylinder Head 1. There was oil intrusion and low compression, consistent with warping of the head. They said that this was a known issue with this engine on Stellantis vehicles because of an EGR valve on cylinder 1 2018/2022. Even though I had my Jeep regularly serviced at McGee Jeep in Barre VT, they never tested for this because it wasn't recommended or in the scheduled maintenance. But when I spoke with them they confirmed this is a known issue. I understand it is a severe, dangerous and expensive repair, but usually occurs after the warranty expires. I now have an unsafe, undriveable vehicle with a $14k repair pending.

Filed Sep 1, 2025 · Engine, Transmission · MI

Jeep grand Cherokee L, the 3.7L V6 engine in the Jeep has experienced camshaft and valvetrain issues, often related to wear and lubrication problems. Sides a ticking and rough running/banging engine. Caused by faulty camshafts. The company knows the cam shafts are faulty, in Michigan the part is on back order by over 10,000 parts. The company is no longer creating the camshaft because of its known issues but also is not offering a replacement part or solution to the problem, repair and replacement of the camshaft through the dealer is 6months to a Year out due to the shear volume or parts and repairs currently needed by current owners. Leaving owners without a vehicle as they cannot drive the car once the issue arises due to potential damage to the head gaskets.

Filed Jul 20, 2025 · Engine · MI

Was accelerating to pass another vehicle and all of the sudden the the check engine light came on and the engine started shaking as if it were shutting down. I was able to slow down and pull over on the side of the road. Now I am unable to accelerate over about 30 mph without this occurring.

Filed Jun 23, 2025 · Acceleration, Driver assistance · TX

2021 Jeep Grand Cherokee L. I was idling at a light, which means the engine had auto-shut off. The light turned green and I stepped on the accelerator. Car kicked back on like normal and I got back up to speed ~45 mph. So now I'm about 1/4 mile past the light and I hear the engine kick off and lost all acceleration (everything else was normal). Warning popped up on the dash that "vehicle is not in park". I put on my hazards, braked to a stop, put the vehicle in park (nothing happened), hit the push button to turn the vehicle off, waited 2 seconds, hit the button again to turn it back on. It restarted.

Filed Jun 20, 2025 · Electrical, Engine · IL

My vehicle was experiencing the exact same HVAC/AC issues described in Customer Satisfaction Notification Z33 for the 2021 Jeep Grand Cherokee L. Although the campaign specifically lists my make, model, and year, Stellantis claims my VIN is not covered. I was forced to pay $175 for the same repair listed in the Z33 document (HVAC module flash, Labor Code 18-Z3-31-82), and this should have been covered. Stellantis is refusing reimbursement even though the issue and fix are identical.

Filed May 13, 2025 · Engine · OH

Presented as camshaft position sensor with loss of power, poor acceleration and general misfires. After many weeks of diagnostic and repairs, turns out to be a problem with the camshaft intake. Specifically the entire cam kit. Appeared 1 week after purchase as a check engine light. This problem had been confirmed by the chrysler dealership where I bought the car and sent it for diagnostic. Problem with the cam could result in sudden loss of power while driving/and or limp mode. Damage to transmission and other parts such as timing chain. I do not have any invoices, however this vehicle was in for service at greenwood auto in cortland ohio for a week before being transferred to Mig chryler in bellafontaine ohio where it was bought for service. Currently no invoice for the repair because the parts are not available due to high amount of demand for this specific problem. My jeep has now been in the shop for 4 weeks with no timeframe for parts.

Filed Feb 1, 2025 · Driver assistance, Engine · WI

December 2021 about 2 months after purchasing, traction control, power steering light would intermittently turn on as well as the radio screen would flash black. All of these were separate problems and were not ways necessarily present when another light was on but they did occasionally all happen at the same time. Periodically, not every time when the light came there was the inability to turn the wheel. The length of time the light of inability to turn the wheel would vary sometimes the light would go away after turning the vehicle off and turning it back on while other times it was days. By the time a shop is able to get it in to be looked at the lights were off and not able to be recreated. It was at the dealership for a while and was told I could bring it home. I had concerns the and voiced them that although the light isn’t on now, what if it does turn on and I can’t turn the steering wheel while driving? It couldn’t be fixed if they didn’t know what was causing it. Eventually an ‘update’ was done and supposed to have fixed the problem. The radio still flashes a black screen periodically, the lights didn’t come on as frequent and the inability to turn the wheel went away. Until recently December 2024 intermittent lights that come on but do not stay on, check engine light, electric power steering, front collision (off) and traction control. These lights have come on intermittently but do not stay on. I have had times where I was unable to turn the wheel, luckily not on the road, the vehicle has lost traction while driving in the snow over the winter and has occasionally felt like the vehicle was ‘chugging’ down the road. Now the symptoms are not present every time a light turns on sometimes it runs fine. The length of time the lights stay on vary and again by the time I can get an appt the lights are off and the lights do not always come on at the same time as another. So the issue occurring with hardly any miles and no again with about 50k mils.