What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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Sam Harris

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I know this is 07-14 section but does anyone know if a 2019 Yukon Denali is flex fuel? My avalanche has a yellow gas cap. Has a badge on the tailgate as well. My Denali has no gas cap and doesn't say anything that I've noticed. Guessing not
probably not my 18 is not flex fuel, but it can be done just have to add the sensor and program it in with a tune. I believe gen5diy and the harnessdr both sell the wiring harness for the sensor.
 

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