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Hesitation/Stumble at take off ONLY



My 2006 Yukon Denali 6.0 has a 3 second hesitation/stunble/no power ..only at take off ... ONLY SOMETIMES ... ..bought a year ago and cannot figure out what to do.. has 104000 miles and runs great other than this problem ..its only at take off and doesn't do this all the time ..no codes to check no check engine light..and I am lost... I changed plugs ..cleaned EGR valve ..cleaned mass air flow and throttle body ..new air filter ..please lead me in some right direction..thanks

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