GMC Envoy XL engine power issue when AC is on causing motor shutdown on GMC Envoy XL

Some GMC Envoy XL owners report experiencing engine power issues specifically when the AC is on, which can be attributed to several potential causes. These include a dirty throttle body, which may lead to engine stalling and can be resolved by cleaning it with carburetor cleaner. Additionally, low AC refrigerant levels may cause the engine to die when the AC is activated, resulting in warm air blowing from the vents; checking and refilling the refrigerant can remedy this. Owners also note that disconnecting the battery can reset learned settings, causing stalls when the AC is on, and relearning these settings or performing a throttle body relearn procedure may be necessary. Furthermore, issues within the throttle system can trigger reduced engine power mode, hindering acceleration and possibly leading to engine shutdown when the AC is engaged; while some dealers may recommend replacing the throttle assembly, this can be an expensive solution that might not be needed. Addressing these potential causes is crucial for effectively diagnosing and resolving the engine power issues in the GMC Envoy XL.