Service bulletins for the 2011 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.
23 on file from NHTSA, as of 2026-10-19.
By type
By component
| 42-070 | 2026-10-17. Service bulletin. UNKNOWN OR OTHER. Due to supplier constraints, an authorized aftermarket surge tank has been made available. |
|---|---|
| P001 | 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 | 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 | 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 | 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 | 2020-04-03. Service bulletin. EQUIPMENT. Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage. |
| 03-071 | 2020-01-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer. The issue can be temporarily resolved using any one of the included procedures. |
| 01-075 | 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. |
| TIB43-062 | 2019-10-04. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Information Only – This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP). |
| TIB-03-047 | 2012-08-23. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY. KENWORTH: DIAGNOSTICS INDICATE FAILED FUEL LEVEL SENSOR FUNCTION IN REPAIRS AND BEFORE COMPONENT IS REPLACED, DIAL FACE SHOULD BE CLEANED AND FAILURE VERIFIED. ALL KENWORTH MODELS WITH OHM DIAL OR OPEN CARD STYLE FUEL SENDERS. *PE |
| TIB-43-025 | 2012-05-01. Service bulletin. UNKNOWN OR OTHER. KENWORTH: THE STANDARD PRODUCTION COMPONENTS ARE REPLACING THE PRE-PRODUCTION COMPONENTS. *PE |
| SB-E-049 | 2012-05-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ERRONEOUS FAULT CODES MAY DEVELOP IN CHASSIS OR CHECK ENGINE WARNING LIGHT RELATED TO NOX EMISSIONS MEASUREMENT AND AFTERTREATMENT IF IMPROVEMENT FOR THE RECALIBRATION OF ENGINE CONTROL MODULE (ECM) IS LEFT UNCORRECTED. *PE |
| TIB-16-35 | 2012-01-09. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE FRONT AXLE U BOLTS WERE MANUFACTURED ON CERTAIN T3 AND T4 SERIES TRUCKS WITH INSUFFICIENT TORQUE. *PE |
| TIB-26-21 | 2012-01-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. KENWORTH: ON CERTAIN TRUCKS, THE EATON TRANSMISSIONS MAY BE SUSCEPTIBLE TO HAVING WATER INTRUSION WHICH CAN CAUSE THE ECU TO STOP WORKING. LOSS OF COMMUNICATION AND PRIMARY FUNCTION MAY REQUIRE REPLACEMENT OF THE ECU'S FAILURE MODE. *PE |
| TIB-34-039 | 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-E-030 | 2011-08-29. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING. PACCAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER.CAMPAIGN TO REPLACE THE WATER PUMP. *RM |
| TIB-42-48 | 2011-08-16. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. PACCAR: INFORMATION ON PREMATURE FAN CLUTCH LINING WEAR. *RM |
| TIB-42-043 | 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 | 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-03-042 | 2011-08-12. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. PACCAR: THE FUEL SENSORS MIGHT NOT HAVE A SEALANT PLUG WHICH COULD LEAD TO WATER INTRUSION, CORROSSION, AND FALSE READINGS. *RM |
| TIB-02-113 | 2011-08-12. Service bulletin. SEATS. PACCAR INC: FIRE TRUCK SEAT HEIGHT SPECIFICATION CHANGE. *RM |
| TIB-43-019 | 2011-08-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. PACCAR: THE CHASSIS NEED PRE-PRODUCTION PARTS REMOVED AND RETROFITTED WITH PRODUCTION PARTS. *RM |
| 43-020 | 2011-06-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. PACCAR: THE CHASSIS NEEDS TO HAVE PRODUCTION PARTS INSTALLED AND PRE-PRODUCTION PARTS REMOVED. *RM |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.