# Service bulletins for the 1987 Peterbilt 377

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

4 bulletins from NHTSA, as of 2026-10-19.

- [34\-066](/bulletins/10162392.md), 2019-07-08, Service bulletin: ELECTRICAL SYSTEM. Information Only \- Quick Reference Guide for Electric harness damage repairs.
- [34\-077](/bulletins/10159674.md), 2019-05-13, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:ELECTRICAL. Information Only: Proper instructions for closure of power distribution box cover to prevent corrosion.
- [13\-049](/bulletins/10154733.md), 2019-03-18, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Information: Bendix ACOM Software version 6.16.5.0 for diagnostics may introduce an unrecoverable error. Notice to dealers to replace this version with older software version until Bendix introduces new version.
- [03\-064](/bulletins/10143649.md), 2018-08-13, Service bulletin: ELECTRICAL SYSTEM. Information \- Recommended Practices for Updating ESA Software

JSON: [/v1/vehicles/1987_peterbilt_377/bulletins](/v1/vehicles/1987_peterbilt_377/bulletins)

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