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chevy tahoe, has reduced power, shakes when sitting still, check engine light on, turn egine off and on power back but light still on


Welcome to 10w40.com. Try

Welcome to 10w40.com. Try cleaning your fuel injectors this could free up debris and possibly fix. Check your crankshaft position sensor and wiring also known as (CKP. A faulty crankshaft position sensor can cause an engine to run rough. Check your oxygen sensors as well as the mass airflow sensor (MAF)sensor. Good luck

if the check engine light is

if the check engine light is on most atouzones can diagnose the problem for free and tell you wich one of these censors to change

mass air flow sensor,or O2

mass air flow sensor,or O2 sensors - the tahoe can have up to 4 oxygen sensors - good luck


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