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

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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.