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Service bulletins for the 2008 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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
P0012026-09-29. Service bulletin. ENGINE. "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
43-0672020-07-03. Service bulletin. STRUCTURE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (“SOC”) exhaust and built from 03/6/2006 to 1/20/2020, the clamps that secure the SOC exhaust stacks may not be tightened properly. This may allow the exhaust stack to rotate and contact the cab or sleeper.
01-0752019-12-04. Service bulletin. ENGINE AND ENGINE COOLING. Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
15-162017-10-12. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Fix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.
81102010-08-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:ENGINE. CUMMINS ISX, OR CUMMINS ISM ENGINES EXPERIENCING A PREMATURE FAILURE OF THE FAN HUB BEARINGS. *KB
608-12008-11-08. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. PETERBILT: TRUCKS BUILT WITH CUMMINS ISL ENGINES BETWEEN 1/16/08-6/10/08. DUE TO A MATERIAL ERROR, CERTAIN VEHICLES ORDERED WITH OPTIONAL C-BRAKE BY CUMMINS (OPTION CODE NUMBER 2812140) DID NOT RECEIVE A C-BRAKE ON THE ENGINE. *PE
408-22008-07-29. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. PETERBILT SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. MODEL 320 LOW COOLANT SENSOR. THIS FIELD REPAIR NOTICE IS APPLICABLE TO CERTAIN PETERBILT MODEL 320 VEHICLES BUILT BETWEEN OCTOBER 4, 2007 AND JANUARY 24, 2008 WITH CATERPILLAR C13 ENGINES. CSC WAS RECEIVED. *PE

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