General Motors has released a new technical service bulletin to dealerships for some 2020 Chevy Sonic units due to an issue with an emissions device.
In the service bulletin, The General states that 2020 Sonic units equipped with the turbocharged 1.4L I4 LUV gasoline engine may have a condition where the evaporative emissions purge valve does not fully close. If this condition were to occur, the engine has the potential to run rough, hesitate, or stall at idle speeds. In addition, the Malfunction Indicator Light – or Check Engine Light – could illuminate, which would indicate that a diagnostic trouble code was set.
To remedy this situation, certified GM technicians are to replace the evaporative emissions purge valve as necessary, while the repairs will be performed at no extra charge to the customer.
Notably, this technical service bulletin will be available for quite some time, as General Motors stated that affected vehicles will be covered for a period of 15 years or 150,000 miles – whichever comes first – from the date that the vehicles was originally placed into service. Additionally, this repair is tagged as bulletin number N232395300.
It’s worth noting that other GM vehicles equipped with the 1.4L I4 LUV engine, as well as those equipped with the naturally aspirated 3.6L V6 LFY gasoline engine, may also be afflicted with this issue. With that in mind, the following vehicles are included in this technical service bulletin:
As a reminder, the Chevy Sonic ran from the 2012 to 2020 model years, and was available as either a four-door sedan or a five-door hatchback. For the 2020 Sonic, only the aforementioned 1.4L I4 LUV engine was offered, rated at 138 horsepower and 148 pound-feet of torque. The GM six-speed automatic transmission routed output to the front wheels.
Production took place at the GM Orion Assembly plant in Michigan.
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