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TSB Document:

Affected Component: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

Summary
13360 - Service Update (added population). This bulletin provides a service procedure to check the rear differential fluid level. The rear differential assembly for these vehicles may have been shipped from the supplier with insufficient fluid. If the fluid is low, dealers are to add fluid and test drive the vehicle. If a loud whine, gear, or bearing noise is observed during the test drive, dealers are to contact the GM Product Quality Center (PQC) for additional instructions.

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Date Published
OCT 23, 2013
NHTSA TSB #
10114224
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