Is your defective GMC Sierra 1500 actually a LEMON?

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TSB Document:

Affected Component: EQUIPMENT ADAPTIVE/MOBILITY

Summary
This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may be due to fuel movement in the fuel tank when not completely full. The condition is eliminated after completely filling the fuel tank.

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Date Published
NOV 30, 2020
NHTSA TSB #
10184142
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