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Transmission setting changes between starts- I have a 2003 Yukon XL since new- the transmission settings change between starts - 2wh to 4L to All whee
I have 2003 Yukon XL since new- now between starts it will change transmission settings- 2w to 4L to All wheel to neutral- I have changed the ecm unit and the switch on the dash - it has been reprogrammed - no performance issues- just trying to figure it out- MrMike
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- Forum: Engine & Drivetrain
