For more details, see this recent whisteleblower account of the situation: Cruise robotaxi service under review following anonymous letter (https://techcrunch.com/2022/07/14/cruise-robotaxi-under-revi...)

I work directly with the employee who submitted the complaint. He is understating the problem.

The letter also states that Cruise ... intentionally hides from the majority of employees the results of investigations into collisions involving Cruise vehicles and other sensitive, potentially damaging matters.

Cruise has been covering up safety incidents since before the GM acquisition, including an early incident where an engineer suffered a concussion due to violent cabin motion caused by bad motion control code.