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June 22, 2020 Service bulletin

This technical bulletin provides a procedure to check and tighten the B+ at the starter for proper torque.

Chevrolet technical service bulletin 20NA139 for 2018 Chevrolet Silverado 1500, 2018 Chevrolet Tahoe and 2018 Chevrolet Suburban and others.

Bulletin number
20NA139
Component
Electrical system
Summary
This technical bulletin provides a procedure to check and tighten the B+ at the starter for proper torque.

Owners of these vehicles have filed 164 complaints in the electrical category.

Vehicles covered

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