Help!!!! Engine dies when a.c. is turned on!!

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citp38614

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Aug 10, 2015
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I have a 2005 Tahoe. When I crank it, it runs until you turn the air conditioner on. I have cleaned the throttle body out. The check engine light was on when I purchased it 3 weeks ago and I had a tester put on it and it was a knock sensor. Since this issue occurred the check engine light has went off. Your help will be greatly appreciated!!!
 
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