Service bulletin #15-NA-084: Addresses a rough engine, poor acceleration, smell of exhaust in the cabin and any of the following trouble codes. This bulletin applies to all 2010-2020 GM engines with a turbo and recommends checking for a disconnected air charge cooler connection or a charge air cooler leak before checking anything else. Service bulletin #PIP5684 addresses a leak in the charge air cooler GM advises that this is a temporary fix that may have to be repeated. If you detect ice, allow it to melt so that the moisture can be drained from the induction system including the charge air cooler without damaging sensors or components. You’re looking for any ice that may be restricting the air flow or covering related pressure sensors. Start by inspecting the air induction system including charge air cooler on turbocharged engines. The problem occurs when temps dip below 32☏ (0☌).
GM has determined that restricted airflow due to ice buildup in the air induction system is the cause of the poor engine performance and P0171, P0172, P0299 or P2227 on GM turbo engines.
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