Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 440 bulletins for KENWORTH
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)
18-008
Jan 22, 2018
200000 WHEELS
Fix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.
7-17
Jan 22, 2018
200000 WHEELS
Fix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.
03-063
Jan 17, 2018
110000 ELECTRICAL SYSTEM
Fix-As-Fail ? Some vehicles may set a ?Cluster Not Detected? error message when connecting to the CECU with ESA.
43-051
Jan 9, 2018
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
Campaign ? The lower elbow of the exhaust system does not have a drain hole, allowing water to collect in the pipes and overflow into the aftertreatment canister.
02-141
Dec 13, 2017
350000 EQUIPMENT
Informational Only - Install proper ? in.?20?? in. long fastener for all license plate installations on T680 with Aero Bumpers.
26-029
Nov 21, 2017
110000 ELECTRICAL SYSTEM
Fix-As-Fail - A U1548 fault code is present in the DAVIE log file, with no fault lamp illuminated or other obvious symptoms.
27-007
Nov 20, 2017
102000 POWER TRAIN:MANUAL TRANSMISSION
Informational Only ? False Fault Codes may become active with column mounted shifter and Eaton Automated Manual Transmissions (AMT)
13-047
Oct 25, 2017
042300 SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
Non-Safety Campaign ? The lower nuts of the foot brake valve may not have been tightened correctly.
34-060
Sep 28, 2017
114005 ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
Non Safety Campaign: The circuit for the Trailer Hotline/Trailer Power may not be properly protected on Model T680/T880 vehicles equipped with this option.
43-048
Sep 27, 2017
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
Fix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.
34-058
Jul 13, 2017
111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
Non-safety Campaign: Some vehicles were equipped with a power fuse harness covered with an aluminum-faced tape in the battery box area.
44028
Jun 2, 2017
356000 EQUIPMENT ADAPTIVE/MOBILITY
Non-Safety Campaign: The return fuel fitting on the engine provides a narrow O-ring engagement area, which could lead to potential fuel leaks.
01-070
Mar 9, 2017
354000 EQUIPMENT:MECHANICAL
FIX-AS-FAIL: KENWORTH T680/T880 HVAC PANEL AND TEMPERATURE MODE DOORS NOT FUNCTIONING PROPERLY
45-055
Feb 3, 2017
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
INFORMATION ONLY ? AN ISSUE EXISTS WITH THE COMMUNICATION BETWEEN CUMMINS RAPIDSERVE? WEB AND PACCAR SERVICE INFORMATION RECORD (SIR).
41-016
Dec 22, 2016
060000 ENGINE (PWS)
NON-SAFETY CAMPAIGN: REPLACE THE MOLDED AIR INTAKE PIPE, WHICH CAN CRACK AND ALLOW ROAD DEBRIS INTO THE ENGINE. DEBRIS ENTERING THROUGH THE INTAKE MAY CAUSE SEVERE ENGINE DAMAGE.
01-068
Nov 4, 2016
350000 EQUIPMENT
FIX-AS-FAIL: AN INTERNAL ISSUE MAY CAUSE SOME HVAC MODE DOOR ACTUATORS TO FAIL. THIS WILL CAUSE THE HVAC SYSTEM TO ACT ERRATICALLY OR CONSTANTLY TURN ON AND OFF.
01-067
Nov 4, 2016
350000 EQUIPMENT
NON-SAFETY CAMPAIGN: HVAC WATER VALVES MAY HAVE BEEN BUILT WITH THE WRONG METERING VALVE. . THIS MAY CAUSE THE VEHICLE HVAC SYSTEM TO RUN AT FULL HOT OR FULL COLD REGARDLESS OF THE SETTING LEVEL.
04-017
Oct 24, 2016
350000 EQUIPMENT
FIX-AS-FAIL: THE HEAT-STAKE MOUNTING STUDS USED TO RETAIN THE FIXED PANEL COVER CAN FATIGUE. THIS COULD RESULT IN THE FORWARD CHASSIS FAIRING PANEL BECOMING LOOSE AND RATTLING.
E162
Sep 30, 2016
060000 ENGINE AND ENGINE COOLING
Incorrectly sized bolts may allow the venturri support bracket to vibrate.