Hello all! I just purchased a 13 Yukon Denali with 120k on the clock. I am trying to do a AFM delete since I just found out about the system being prone to failing. I apologize if some of these question have been answered already, I’m super new to GM products, so coming from the JDM Honda scene...
2011 Yukon Denali L94 6.2 Flex Fuel 160k miles...
I had some stumbling on a dead cold start up after filling the tank a while back. Cleaned the throttle body and it ran better for a bit, I think it just brought up the idle till it recalibrated. Then I ran a tank of ethanol free premium and...
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