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09 silverado po2771

darren benedict

By darren benedict
February 22, 2022 in Ask A GM Technician

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darren benedict

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darren benedict

Posted February 22, 2022

Posted February 22, 2022

code po2771 4wd selector doesn't blink, checked ground left hand side of frame under door, with key on trans in neutral can cycle 4wd selector switch can hear selector motor run at every position, when it first happened truck stayed in high gear. Now only shifts 1st to 2nd then back to first,any idea thanks

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