# Service bulletins for the 2008 Kenworth T300

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.

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

- [42\-070](/bulletins/11038569.md), 2026-10-17, Service bulletin: UNKNOWN OR OTHER. Due to supplier constraints, an authorized aftermarket surge tank has been made available.
- [P001](/bulletins/11037541.md), 2026-09-29, 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."
- [02\-160](/bulletins/10188550.md), 2021-03-10, Service bulletin: VISIBILITY; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY:WINDSHIELD WIPER/WASHER. Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
- [32\-015](/bulletins/10177021.md), 2020-07-03, Service bulletin: ELECTRICAL SYSTEM. Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
- [34\-085](/bulletins/10173212.md), 2020-04-03, Service bulletin: VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. Information Only – Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
- [32\-016](/bulletins/10173205.md), 2020-04-03, Service bulletin: EQUIPMENT. Information Only: Proper jump\-starting voltage will eliminate high voltage related issues and equipment damage.
- [01\-075](/bulletins/10168703.md), 2019-12-04, 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.
- [TIB\-34\-039](/bulletins/10040524.md), 2011-09-02, Service bulletin: SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:U\-BOLT, LEAF SPRING TO AXLE. PACCAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INFORMATION ON THE FRONT DRIVE AXLE SPEED WARNING DISPLAY. \*RM
- [TIB\-42\-48](/bulletins/10040167.md), 2011-08-16, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. PACCAR: INFORMATION ON PREMATURE FAN CLUTCH LINING WEAR. \*RM
- [TIB\-42\-043](/bulletins/10040166.md), 2011-08-16, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. PACCAR: INFORMATION ON FAN HUB BEARINGS INSPECTION AND WARRANTY EXTENSION DUE TO A HIGHER THAN NORMAL FAILURE RATE. \*RM
- [TIB\-41\-014](/bulletins/10040165.md), 2011-08-16, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. PACCAR: THERE ARE COOLING MODULES THAT MAY HAVE A LOOSE CONNECTION AT THE CHARGE AIR COOLER MOUNTING. \*RM
- [TIB\-02\-113](/bulletins/10040036.md), 2011-08-12, Service bulletin: SEATS. PACCAR INC: FIRE TRUCK SEAT HEIGHT SPECIFICATION CHANGE. \*RM
- [TIB\-34\-34](/bulletins/10032664.md), 2010-04-26, Service bulletin: EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES; EXTERIOR LIGHTING:HEADLIGHTS. KENWORTH TRUCKS: HEADLIGHT MOISTURE REPAIRS. BEADS OF MOISTURE OR POOLING WATER VISIBLE THROUGH THE HEADLIGHT LENSES. INSPECT FOR MISSING HEADLIGHT VENT AND/OR ROCK SHIELD AND REPAIR AS NECESSARY. \*PE
- [TIB\-45\-36](/bulletins/10030410.md), 2009-09-29, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL. KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THIS IS A FIELD CAMPAIGN TO MODIFY THE TURBOCHARGER OIL DRAIN PLUMBING. MODEL T300, MY 12/13/06\-07/09/08. CSC LETTER REC'D. \*PE
- [TIB\-45\-35](/bulletins/10028346.md), 2009-03-26, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL. KENWORTH TRUCKS: PX\-8 AND CUMMINS ISL ENGINE CALIBRATION CAMPAIGN C0844. UPGRADE ENGINE CONTROL SOFTWARE FOR PACCAR PX 8 AND CUMMINS ISL ENGINES TO ENHANCE PERFORMANCE AND RELIABILITY. \*PE
- [TIB\-45\-34](/bulletins/10028330.md), 2009-03-25, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL. KENWORTH TRUCK: PX 6 ENGINE CALIBRATION. PACCAR CAMPAIGN C0836. TO UPGRADE THE ENGINE CONTROL SOFTWARE FOR THE PACCAR PX 6 ENGINE TO ENHANCE PERFORMANCE AND RELIABILITY.
- [TIB\-44\-17](/bulletins/10027646.md), 2009-01-28, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. KENWORTH TRUCKS: REDUCED ENGINE POWER FROM FUEL STARVATION. ANY MODEL KENWORTH EQUIPPED WITH THE 2007 EMISSIONS COMPLIANT ISX ENGINE AND OPTIONAL DAVCO 382 FUEL FILTER, BUILT PRIOR TO 8/11/08, \*PE
- [41\-9](/bulletins/10026545.md), 2008-11-08, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL. KENWORTH: THE ORIGINAL PUBLICATION IDENTIFIED CHASSIS WITH PX\-8 ENGINES ONLY. PX\-8 AND ISC ENGINES\-ENGINE WARNING LIGHT ON. \*PE
- [13\-25](/bulletins/10025870.md), 2008-09-12, Service bulletin: SERVICE BRAKES, AIR:SUPPLY:QUICK RELEASE VALVE; SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE. KENWORTH: T300 CHECK VALVE CAMPAIGN: CHASSIS IDENTIFIED MAY HAVE BEEN BUILT WITH AN AIR SYSTEM SINGLE CHECK VALVE RATHER THAN A SINGLE CHECK PRESSURE REDUCTION \(SCPR\) VALVE. \*PE
- [02\-104](/bulletins/10024921.md), 2008-06-09, Service bulletin: VISIBILITY:WINDSHIELD. WINDSHIELD REPAIRS ON CONVENTIONAL CABS. ALL C500'S, T300'S, T600'S, T800'S AND W900'S EQUIPPED WITH CURVED GLASS. MODEL YEAR UNKNOWN. \*NJ

JSON: [/v1/vehicles/2008_kenworth_t300/bulletins](/v1/vehicles/2008_kenworth_t300/bulletins)

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