When using cruise control car has a hesitation when going up hill on 2001 Chevrolet Impala

Changed O2 sensors and plugs and wires and still doing it

Asked by for the 2001 Chevrolet Impala
1 answer 1 comment
UNDER NORAMAL DRIVING NO ISSSUES
Normally no issues under normal conditions. Occasionally there is the same hesitation or "bucking" so to speak. Only between 55 and 65 going up a hill.