GMC Terrain heating and A/C issues with recurring engine light on GMC Terrain

Some GMC Terrain owners report experiencing heating and A/C issues, along with a recurring engine light. These problems often stem from common complaints related to the electrical system, powertrain, and structure of the 2022 model. Owners have noted that the heating system may only function while driving, which could be due to low coolant, air pockets, a bad heater core, or a malfunctioning thermostat. Additionally, some owners find that their A/C blows hot air, potentially caused by low or overcharged refrigerant, a compressor malfunction, or a faulty blend door actuator. Others report that their A/C fails to cool properly due to clogged filters or dirty coils. Furthermore, engine performance can be affected by issues with the fuel pump and engine cooling system, leading to stalling. A faulty A/C compressor is also a common concern, often necessitating replacement. It is recommended that owners experiencing these issues seek inspection from a qualified mechanic to ensure timely repairs and optimal vehicle performance.