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January 6, 2022 Service bulletin

Power train

Chevrolet technical service bulletin PIP5345A for 2014, 2017-2018 Chevrolet Silverado 1500, 2015-2019 Chevrolet Tahoe and 2014, 2017-2018 GMC Sierra 1500 and others.

Bulletin number
PIP5345A
Component
Power train
Summary
This Preliminary Information communication provides information to the technician about being to achieve pre-load when setting up the pinion bearing pre-loads during reassembly of the 9.5/9.76 inch rear axles. Technician will need to use pinion gear install washer part number 11609638 onto the pinion shaft between the flange and nut. Tighten the pinion nut until you achieve 10 pound inch or 1.0 newton rotating torque. After the torque has been achieved back the nut off and remove the washer. Tighten the nut back down until you achieve 15 pound inch or 1.7 newton meters for used bearings or 20 pound inch 2.25 newton meters for new bearings.

Owners of these vehicles have filed 1,513 complaints in the transmission category.

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