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Service bulletins for the 2013 Peterbilt 320

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.

26 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Wiring and fuses are shown. Show all

Bulletins, newest first
TSB-1301552014-02-26. Service bulletin. ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY. CUMMINS: THE RELAYS AND FUSES OF AFTERTREATMENT SYSTEMS, IN WIRING HARNESS, IS POTENTIALLY NOT ADEQUATELY SECURED VIA ORIGINAL EQUIPMENT MANUFACTURE (OEM) AND HAVE WIRE RUBBING POINTS, RELAY DAMAGE OR RUB POINTS. *PE
RN-413-12013-08-14. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. PETERBILT: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CERTAIN TRUCKS, WITH CUMMINS ENGINE, HAVE EXPERIENCE LOSS OF POWER TO AFTER TREATMENT COMPONENTS AND NEED TO SWITCH THE FUSES FROM 5 AMP TO 10 AMP. MODELS 320, 587, CONVENTIONAL. NO MODEL YEARS LISTED.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.