GMC Safari poor acceleration issue persists despite two mass air sensor replacements on GMC Safari

Some GMC Safari owners report experiencing poor acceleration despite replacing the mass air flow sensor multiple times. These issues may persist due to other underlying factors within the vehicle's system. Additionally, a dirty throttle body can lead to rough idling and sluggish acceleration, making it essential to clean it for improved performance. Owners also note that vacuum leaks in the lines can affect engine performance and contribute to acceleration problems. Faulty spark plug wires are another concern, as they can cause hesitation during acceleration, necessitating a thorough inspection. Furthermore, some owners find it helpful to check for any Technical Service Bulletins (TSBs) related to acceleration issues specific to GMC Safari models. If these steps do not resolve the problem, consulting a mechanic or dealership experienced in GMC Safari repairs is recommended for further diagnosis and assistance.