Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 440 bulletins for KENWORTH
41-018
Jan 11, 2019
060000 ENGINE (PWS)
Information Only - PACCAR Engine-powered T880S chassis are approved for snowplow applications without the need for inside/outside air.
34-068
Jan 4, 2019
110000 ELECTRICAL SYSTEM
Non-Safety Campaign: Vehicles equipped with Cummins ISX12 engines may have missing line heater fuses or relays.
13-049
Jan 4, 2019
118000 ELECTRICAL SYSTEM:SOFTWARE
Information: Bendix ACOM Software version 6.16.5.0 for diagnostics may introduce an unrecoverable error. Notice to dealers to replace this version with older software version until Bendix introduces new version.
E235
Dec 21, 2018
110000 ELECTRICAL SYSTEM
Information Only - All versions of DAVIE4 Workshop Content 18.06 and older fail to load Session Reports.
TIB34-073
Dec 5, 2018
118000 ELECTRICAL SYSTEM:SOFTWARE
Fix-As-Fail: Vehicles equipped with VECU may activate frequently when LVD is enabled. Resolution is to update the CECU software.
TIB23-002
Dec 4, 2018
100000 POWER TRAIN
Campaign: The clutch may not shift appropriately or the clutch may not disengage due to lack of torque on the clutch bolts.
E223
Oct 8, 2018
350000 EQUIPMENT
Non-Safety Campaign: vehicles built between February 01, 2017 and April 03, 2017, were built with a heavy-duty end-out selective catalytic reduction (SCR) component that may develop cracks in the ribs of the internal flange.
34-067
Sep 26, 2018
350000 EQUIPMENT
Information Only ? Kenworth will not warranty CAN network failures or damage caused by improper post-production connections.
56-002
Aug 28, 2018
100000 POWER TRAIN
Non-Safety Campaign - PTOs in certain T680/T880 chassis equipped with PACCAR or an Eaton Endurant Transmission may not contain the wiring required to activate the PTO accessory.
02-143
Aug 9, 2018
160000 STRUCTURE
Information Only: SBFA T880 may have a structural failure involving only the center section of the hood, including hood strut mount failures.
59-001
Aug 8, 2018
160000 STRUCTURE
Non-Safety Campaign- JOST International has concluded a possibility exists that one production 5th wheel built with a prototype component was installed on a Kenworth chassis
03-062
Jun 29, 2018
110000 ELECTRICAL SYSTEM
Fix-As-Fail: Bendix Wingman radars with ice/snow buildup on the optional PACCAR radar cover may experience false warnings and mild brake applications from the Wingman System.
26-031
Jun 28, 2018
100000 POWER TRAIN
Information Only ? Certain chassis with Manual or UltraShift transmissions experienced loosening of bellhousing bolts.
43-056
Jun 14, 2018
190000 TIRES
Non-Safety Campaign- Incorrect GHG emissions identifier label for the tire classification listed on printed label.
43-054
Jun 14, 2018
200000 WHEELS
Non-Safety Campaign ? T170/T270/T370 DPF/SCR Canister Bracket Bolts may be under-torqued.
32-010
Apr 6, 2018
110000 ELECTRICAL SYSTEM
Information only - Customer installed inverters may be wired incorrectly.
63-008
Mar 26, 2018
110000 ELECTRICAL SYSTEM
Non-Safety Campaign - OBD modem is unable to communicate to telematics systems.
02-140
Mar 23, 2018
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
Fix-As-Fail ? The washer reservoir may leak due to interference with the top drivers-side fan ring support bracket.
TT8136
Mar 16, 2018
100000 POWER TRAIN
Tip for technicians to avoid a conflict with the engine controller when re-programming the transmission
99-034
Mar 8, 2018
118000 ELECTRICAL SYSTEM:SOFTWARE
Information Only - CECU/VECU unable to communicate with ESA requires use of a Y-cable.
13-048
Mar 6, 2018
030000 BRAKES (PWS)
Fix-As-Fail ? Repair procedure for DTCs U1120 and/or U17C5 with WABCO Q27-6075-130 ABS ECU.
44-029
Mar 2, 2018
045400 SERVICE BRAKES, AIR:DISC:CHAMBER
Non-Safety Campaign - The coolant lines connected to the fuel filter may interfere with the brake chamber on certain T680/T880 vehicles. Repeated interference may cause the fittings to break and leak coolant.
34-063
Feb 9, 2018
121300 EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH
Fix-As-Fail - Low Beam Headlamp Bulb Diagnosis (Inspect Bulb and Connector) (Repair procedure)