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Ttestdepth replied to the thread 2012 Yukon Denali 6.2. Poor gas mileage, no codes thrown and no check engine light.Well that didn't work. There must be a reset or relearn for the MPG display because now it shows 6.4mpg.
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Ttestdepth reacted to Doubeleive's post in the thread 2012 Yukon Denali 6.2. Poor gas mileage, no codes thrown and no check engine light with
Like.
that's kinda low unless she drives like me which is highly doubtful. 1. how many miles on it? I drive mine like a doberman is chasing me... -
Ttestdepth replied to the thread 2012 Yukon Denali 6.2. Poor gas mileage, no codes thrown and no check engine light.This is a new symptom after replacing the new parts I mentioned. I don't understand why the computer would display the AVG mpg declining...
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Ttestdepth posted the thread 2012 Yukon Denali 6.2. Poor gas mileage, no codes thrown and no check engine light in Engine & Drivetrain.While sitting in the truck at idle I can watch the computer display "Average fuel mileage" it starts dropping while just sitting there...
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Ttestdepth reacted to NickTransmissions's post in the thread 2012 Yukon Denali 6.2L 6spd transmission hard shift from 1-2. Shakes truck with Like.
Harsh 1-2 upshifts can be a few things: 1) Intermittent transmission fluid pressure (TFP) switch fault in either TFP 1 and/or TFP 5 -...
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Ttestdepth posted the thread 2012 Yukon Denali 6.2L 6spd transmission hard shift from 1-2. Shakes truck in Engine & Drivetrain.This is the stock transmission and nothing has ever been towed with this vehicle. Less than 200000 miles on it and never been off road...
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