General Motors has issued a Service Update for select units of the 2022 Chevy Silverado Medium Duty truck due to an issue with the air compressor coolant port issue.
According to The General, affected 4500 HD, 5500 HD, and 6500 HD trucks may have a condition where the air compressor coolant outlet port may cause a slow coolant leak at the air compressor on the engine. Dealers are to inspect the automatic level control air compressor, and replace as necessary. Notably, the entire fix should take roughly three hours for certified GM technicians to complete.
An important distinction to note that this is only a Service Update, and hasn’t been labeled as a Customer Satisfaction Program or Recall. Furthermore, this Service Update is tagged with N222384940, and only involves 213 Silverado MD trucks.
As a reminder, the Chevy Silverado MD truck lineup – which includes the aforementioned 4500 HD, 5500 HD, and 6500 HD variants – was introduced back in 2018 for the 2019 model year, and is intended to meet the most hardcore vehicle demands.
Under the hood, the Silverado MD is equipped as standard fare with the 6.6L V8 L5D turbodiesel Duramax engine, which is rated at a maximum of 350 horsepower and 700 pound-feet of torque. Observant readers may note the reduced output figures as compared to the 2024 Chevy Silverado HD, which features the latest variant of the 6.6L L5P V8 turbodiesel Duramax engine rated at 470 horsepower and 975 pound-feet of torque.
An Allison-branded 10-speed transmission serves as the sole gearbox choice, while both 2WD and 4WD configurations are available.
In regard to structure, the Chevy Silverado MD rides on a platform jointly developed by Navistar and GM. Vehicle assembly takes place at the Navistar plant located in Springfield, Ohio.