Join Date: Jan 2007
Location: LIBERTYVILLE ILLINOIS
2.8, 3.5, 4.2, 4.3, 4.8, 5.3, 5.7 and 6.0 engines coupled with the 4L60E or 4L65E may experience a condition of hesitates, misses or loss of power under acceleration. The vehicle may operate as if it is in reduced power mode. There may not be any DTCs associated with this condition. Have your dealer monitor the TFP switch (transmission fluid pressure switch) they will have to call in to the factory for procedure from there depending on the readings.