Service bulletins for the 2003 Peterbilt 387
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.
18 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Exhaust and emissions are shown. Show all
| 1003 | 2004-03-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. PRODUCT IMPROVEMENT TO REDUCE INSTANCES OF FAILURE OF TURBO EXHAUST PIPE FLANGES. THIS BULLETIN CONTAINS THE PROCEDURE FOR IMPROVING A MODEL 387 ISX ENGINE EXHAUST INSTALLATION. *TT |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.