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June 10, 2019 Service bulletin

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Peterbilt technical service bulletin 34-066 for 1991-1992, 1994-2016 Peterbilt 379, 2006-2020 Peterbilt 579 and 2004-2019 Peterbilt 389 and others.

Bulletin number
34-066
Component
Electrical system
Summary
Information Only - Quick Reference Guide for Electric harness damage repairs.

Owners of these vehicles have filed 30 complaints in the electrical category.

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