While the vehicle was in motion in January 2020, the check engine light came on. The vehicle loses power while driving and then accelerates suddenly which is a hazard. I took the vehicle to the dealership and I was told the faulty part was GM# 12633613 rocker arm control-solenoid valve. The dealership friendly Chevrolet in dallas, tx told me they could not fix the car because the damaged part was obsolete. I have been in contact with Chevrolet and they gave me a case #9-5872869989 but as I try to follow up they don't answer my calls any more. Chevrolet just gave me some websites where to find the part, but none of the sites has the part and I continue driving with the check engine light on and at risk of an accident. I have not received any solution from Chevrolet and they have just sent me to look for the part in the aftermarket or junkyards. I have wasted countless hours looking for the part with no success. Please have the manufacturer recall the vehicle or start producing the part number again so my car can be fixed. I wont be able to pass the inspection or sell the car with the check engine light on.

- Forney, TX, USA

Mechanic stated my transmission is going out. At 93,000 miles this should not occur. My car needs repair almost every month. Took to Chevrolet dealership and was told that I had metal shavings in my transmission. Then was called back stated I dont. Now another mechanic stated my transmission is going out

- Houston, TX, USA

When I come to a full stop at a red light or stop sign, when my car tries to use the auto stop feature the majority of the time it fails to start back on which causes it to fully turn off while the key is still turned and the car is in drive as if the car was still driving. I don't know what this problem is nor do I know what's causing it. I changed my spark plugs thinking that might of been the problem but it still continues to do the same malfunction. Please help.

- Miami Gardens, FL, USA

Got code P16cf, malfunction of rocker arm oil control valve. Came on while driving, now unable to buy part.

- Onalaska, WI, USA

I took my car to two dealerships. My check ebgine light I on. They said I needed a rocker arm valve solenoid. Part no. 1633613 but cannot seem to find rhat part.

- Charlotte, NC, USA

The check engine light came on and the code reader showed that the variable timing solenoid needs to be replaced. After searching for a replacement part, I keep getting told that this make/model consistently has this problem. The engine light comes on, the car loses power and seems to have a tugging feel when driving especially when accelerating. This happens both with in town driving and freeway driving. Happens at any speed.

- Wapato, WA, USA

Part no. 12633613 which is a valve is currently on national back order. There are currently 23,000 customers waiting for this part. This part should be recalled it's not possible that 23,000. Parts are defective and not be recalled. Nobody (dealership or GM) seems to know when to expect the part, won't say who makes the part or why it's on national back order.

- Rio Rico, AZ, USA

This car is equipped with the auto stop/auto start feature. Meaning when you come to a complete stop the car shuts down, then when its time to go by releasing the brakes it will restart and move again. With my Malibu it will auto stop constantly and when the light turns green it won't restart for sometimes minutes at a time. Holding up traffic behind me and creating chaos. I have to put the car in park mode, pull out the key, reinsert the key and try to start it. Sometimes it restarts after one time of doing this, but most of the time it takes several tries to finally getting it started. It started doing this about 2 months ago and seems like its getting worse. I feel like this is a huge safety issue, and am concerned for my safety and those of others in my car at the time. Please investigate into this matter, thank you.*

- Rogersville, MO, USA

I own a 2014 Chevy Malibu. It currently as of today (1/8/2020) is in its extended warranty. The part my vehicle needs to function again is a: intake rocker arm oil control valve, part# 12633613. This part is no longer in production by GM and according to them no one makes the part so they are unable to fix the vehicle. The only remedy they offer is to take the broken car as a trade in when I purchase a new vehicle from them. They refuse to offer any sort of refund or replacement. The car was manufactured in 2014. It's not an old car.

- Richland, WA, USA

Rocker arm control valve- GM part # 12633613. Causes chugging, shuddering, slow acceleration, delay when going from a stopped position (I.e. stop light/ sign), poor gas mileage. Check engine light remains on and will not allow for remote start to be used. Driving at any rate of speed over 15 mph, either in town or highway/ interstate, the engine will chug or try to stall. Also going over 45 mph, will cause the vehicle to shudder when driving. Acceleration is delayed, causing issues while at intersections

- Denver, IA, USA

The engine light came on with AP2646 code. After attempting to repair, and the code remaining I attempted to find part 12633613. Unable to locate the part I brought it in to a garage. They replaced the same part I had already replaced, and still the engine light remained. They were also unable to locate the referenced part online or through a dealership (mangino Chevrolet). I contacted several dealerships and GM, the party is discontinued and back ordered at parts stores and dealerships. Without this part, the car can not be inspected and becomes a safety issue, and S legal issue of continued to operate on the road (in NY and elsewhere I imagine). The part is faulty on many cars if the back order is an accurate indication. Although it does not prevent safe operation of the car, the car can not be inspected overall for safety until the engine light is fixed.

- Fort Johnson, NY, USA

It's making a unknown sound

- Grandview, MO, USA

I have a 2014 Chevy Malibu ls. About a year ago while at a stop light the car engine shut stopped working, and all the lights came off. I had to get the assistance of a police officer to control traffic away from my car, until the tow truck arrived and towed it to the shop. I was told that the auxiliary battery was bad, and had it replaced. The car it worked well. In August of this year the car engine began shutting off, while I was driving, and sometimes after it was parked overnight. I had the batteries checked, and was told that they were bad. I live in AZ, and the weather here is very hot, both were replaced on August 27th and 28th, less than 2 months ago, with two new batteries. The car worked well up until this evening, when it shut down completely as I was driving into my yard. All the lights came off, and I cannot get the key out of the ignition. I am glad that it happened when I entered my yard and not while I was driving on the freeway. Will tow it to the shop in the morning to find out what the problem is now.

- Glendale, AZ, USA

The car shut off when you get on your brakes while driving down the highway

- Jasper, TX, USA

HVAC control module. Module needs to be reprogrammed.

- Gainesville, VA, USA

Car has problem with auto stop. Stalls and hard to restart. Took to mechanic and gets code with brake assist. Called Chevy and they stated my car had a recall with this exact issue but states is closed however they could not get any info on when fixed and where. Called dealer where bought car and they state no recall on car ever and never even hard of this recall. Called back other dealer and they will look at car but cant for days and wont give a loaner. What is happening with car is wht the recall is. Dealer that will look at car thinks it is very starnge that comes up with this recall but closed with no other info. Car is not safe to drive as stalls and hard to restart and having brake assist issues.

- Smithtown, NY, USA

My windshield and back window was fogging on the inside during the fall and frosting on the inside during the winter. My carpets felt like a sponge. It turned out there were 6" of standing water under my floorboards on the driver side of the car (front and back). The mechanic traced this back to an opening between two panels, just below the windshield, that were never sealed. He said I was lucky. If the water got any higher, it could have interfered with the electrical and airbag system. I also lucked out in that there was no mold growth. My car was purchased new only five years prior and had never been in an accident. Repair required the removal of my windshield, a side panel on the car, my driver seat, and the tearing up of my carpets.

- Tinley Park, IL, USA

The vehicle has a auto/stop feature which is extremely faulty. The feature is supposed to keep the vehicle's electronics running while the engine shuts off after certain criteria before stopping is met. However, the auto/stop feature on my car when activated causes the system to completely shut off and all electronics go black upon starting back up. The check engine light has also come on because of this issue. After researching, there is no way I can disable the feature and there is no way to really fix the issue. My concern is that something electrical could happen and the car could be ruined as a result.

- Apo, AE, USA

I started my car and drove about 1/4 of a mile and a warning light came up on my car stating engine power reduced. Pulled over put car in park turned car off then on then drive. Car did fine for about a mile. Then car showed reduced engine power again and then completely shut off in middle of road and would not start back. Was in middle of curve going up hill. Car would not even roll when placed in neutral so that I could get it out of road.

- Webster Springs, WV, USA

Auto start does not work. It keeps giving me a check engine light when I try to start the car with the remote. I took it to auto zone to get a diagnostics test. The code came back with P305F dtc definition.

- Jacksonville, FL, USA