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January 13, 2022 Service bulletin

This service bulletin provides service information for a DEF pump that is unable to build pressure after...

Chevrolet technical service bulletin 20NA110 for 2017-2022 Chevrolet Silverado 1500, 2021-2022 Chevrolet Tahoe and 2018-2019, 2022 Chevrolet Equinox and others.

Bulletin number
20NA110
Component
Fuel system, diesel: delivery: fuel pump
Summary
This service bulletin provides service information for a DEF pump that is unable to build pressure after replacement.

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