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Posted

hey guys so I replaced fuel pump fuel filter and cleaned throttle body on my 01 GMC yukon and my trucks idling high now at idle sits at 1k put in gear drops to 600. truck was idling fine before hand any advice? 

Posted

Still could be a bad throttle body sensor or throttle body.  You'll need to have it scoped to see the readings.  GM tech II tool. 

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