[Isonce]

Bought my Malibu March 2019. In September, it broke down in the city when getting off the highway. Engine power was reduced, but no warning lights came on. We were 50 miles from home and it was midnight. Roadside assistance would not cover the tow that far. Thankfully our friends we were with had AAA. The dealer I bought it from was so rude when I called the next day. They told me I should have called to make an appointment. Not sure how I was supposed to do that...first they are closed at midnight, second, how am I supposed to predict when I have car problems with a brand new car? I had it towed to another dealer just a few miles away. They were very friendly and accommodating. Got me a loaner that day. When they were finally able to run diagnostics, it came back throttle body. GM was on strike at the time, so it took a while to get the parts. Now, 5 months later, I had just picked my kids up from school, pulling out of the lot at about 5mph, check engine light, traction control light and reduced engine power comes on. Called my local dealer to see if I could stop by and have them just read the code. They wouldn’t do it. I had to make an appointment (per the secretary, I sat on hold with service for 3 min and nobody picked up. That’s been an ongoing problem with this particular dealer for a very long time). Called the other dealer, They couldn’t look at it at that time, but he told me it would be ok to drive home. I stopped at Autozone just to get the code read. It is the throttle body again. I limped it home. Going up a steep hill, max speed it finally reached was 45mph and it stayed in first gear until I reached the top, it finally shifted into second. I contacted GM as soon as I got home. I gave them my VIN and other information, they told me to call the dealer and speak to the Customer Experience Manager. Thankfully he got me an appointment for Monday and a loaner car until they can figure out what it wrong with my car. Anybody else having problems with their 2019? I have read all of the 2016-18 lawsuits with this problem.

 

[campb292]

Bummer situation - especially the one dealer being less accommodating. Code for throttle body doesn't mean much. What is the code? It probably starts P then 4 digits. Did they actually replace the throttle body the first time? If yes, I haven't read anything about failing throttle bodies on 2016-2020 cars and there are no lawsuits dealing with the throttle body itself - those lawsuits are about the pedal sensor that sends a signal to the throttle body.

 

[Isonce]

They replaced the throttle body and intake tube for the turbo.
The lawsuit I have read about has to do with both the pedal and throttle body and components. Maybe I am misreading it, but it sounds to me that they are the same. ?‍♀ I’m no car expert but I have been around cars my whole life. This new stuff is more complicated though.

 

[campb292]

Interesting. I don't think I have read another report of throttle body failure or replacement on a gen9 nor the intake. The accelerator pedal position sensor is the part that has a habit of failing on the 2016-2018 and resulted in the individual and class action lawsuits. It frequently gets confused with the throttle body since it is the sensor that signals the throttle body. It gets a signal mismatch and triggers "safe mode" (with code P2138) which is usually anything but safe. GM already extended coverage for that part to 10 years / 150,000 miles. I hope Monday they can sort it out properly (if the same problem).