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OBS Yukon Denali Refuses To Shift
I have a OBS Yukon Denali with 230,000 miles. I bought it as a fixer upper as I've had good luck with a OBS truck in the past. The Denali originally shifted hard into 2nd, I dealt with it and figured it would need a 4L60E swap eventually. One evening I decided to do the Seafoam treatment to the...- SapperDaddy
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- Forum: Engine & Drivetrain
