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2008 Sierra codes P0751, 756, 761, 731, 877
I had the dealer flush and change all fluids @ 111,000 miles. Soon after I started having trouble with the tranny. 2008 GMC Sierra Duramax, 6 spd. I've kept clearing the codes and driving, but they're getting more frequent. Since most of these come back to solenoids & pressure switches, I...- kwikwater
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- Forum: Engine & Drivetrain
