Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 2,196 bulletins for CUMMINS
TSB210106-051820
May 18, 2021
100000 POWER TRAIN
This Technical Service Bulletin describes the verification and resolution of intermittent datalink fault codes for aftertreatment, turbocharger, or certain chassis systems in Freightliner? chassis equipped with an Allison? transmission. Thi
TSB210101-051420
May 14, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of INSITE electronic service tool error message when trying to enter injector bar/trim code. This is due to incorrect 10-digit bar/trim codes being used instead of th
TSB210204-051420
May 14, 2021
060000 ENGINE (PWS)
This Technical Service Bulletin describes the verification and resolution of an external lubricating oil leak from the crankcase breather tube. This can be caused by debris from valve cover manufacturing process can plug the lubricating oil
TSB210105-051320
May 13, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of improper replacement of continuous flow valves resulting in low fuel outlet pressure.
TSB170024-051120
May 11, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of the air compressor ingesting moisture from air compressor inlet tube supplied by Navistar. Air compressor inlet tube is connected at charge air cooler and condensa
TSB200162-051020
May 10, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of coolant found in lubricating oil pan, or lubricating oil found in radiator or top tank caused by cylinder block porosity. This is an update to a previously submitt
TSB210097-050620
May 6, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of viscous vibration damper mounting capscrew fractures that may result in front-end/cooling package damage.
C2390D
May 4, 2021
030000 SERVICE BRAKES, HYDRAULIC
This In-Shop Campaign is being issued to recalibrate the Engine Control Module (ECM) on certain X15 CM2450 engines. The campaign enables authorized repair locations to calibrate the engine control module (ECM) to the latest revision when th
TSB160006-050420
May 4, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of Fault Code 4713 and the proper injector isolation test procedure. This is an update to a previously submitted communication.
TSB101120-043020
Apr 30, 2021
350000 EQUIPMENT
This Technical Service Bulletin describes the verification and resolution of engine surge, usually with high counts of Fault Codes 1861, 2776 and/or 3847. The cause is found to be contamination of the air/fuel mixer and partial or complete
TSB210055-042920
Apr 29, 2021
070000 FUEL SYSTEM, GASOLINE
This Technical Service Bulletin describes the availability of new high-pressure injector supply lines, fuel supply line, and fuel supply line braces when an existing component within the fuel system may be malfuctioning. This is an update t
TSB210088-042220
Apr 22, 2021
100000 POWER TRAIN
This Technical Service Bulletin describes the verification and resolution of an oil leak noticed around front of the engine either at gear housing to cylinder block interface or lubricating oil pan to cylinder block interface. This is due t
TSB190165-042020
Apr 20, 2021
070000 FUEL SYSTEM, GASOLINE
This Technical Service Bulletin describes the verification and resolution to address soot deposits in the intake air connection exhaust gas entrance ports that affects Exhaust Gas Recirculation flow measurements. This is an update to a prev
ATC2305A
Apr 20, 2021
110000 ELECTRICAL SYSTEM
This Account Team Coverage is being issued to address the occurrence of Fault Coade 7935 on certain X15 CM2450 X124B engines. This ATC authorizes certified repair locations to recalibrate the engine control module (ECM). This is an update t
TSB170054-042020
Apr 20, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of fault codes caused by an aftertreatment diesel exhaust fluid (DEF) tank heater coolant control valve that is not closing completely. This is an update to a previou
CMI-041621-C
Apr 16, 2021
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
This is a representative Owner Letter to communicate an emissions recall. The engine(s) are potentially eligible for an Emissions improvement calibration campaign.
CMI-041621-A
Apr 16, 2021
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
This is a representative Owner Letter to communicate an emissions recall. The engine(s) are potentially eligible for an Emissions improvement calibration campaign.
CMI-041621-D
Apr 16, 2021
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
This is a representative Owner Letter to communicate an emissions recall. The engine(s) are potentially eligible for an Emissions improvement calibration campaign.
CMI-041621-B
Apr 16, 2021
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
This is a representative Owner Letter to communicate an emissions recall. The engine(s) are potentially eligible for an Emissions improvement calibration campaign.
T2387A
Apr 13, 2021
100000 POWER TRAIN
This Temporary Repair Practice is being issued to provide supporting coverage for progressive damage on certain B Series engines due to valve spring failures. This is an update to a previously submitted communication.
TSB200022-040920
Apr 9, 2021
041000 SERVICE BRAKES, AIR:CONTROLS
This Technical Service Bulletin describes the verification and resolution of a stuck intake air throttle due to the formation of ice in cold ambient conditions. This condition may cause actual position to not meet commanded in cold ambient
TSB210079-040920
Apr 9, 2021
350000 EQUIPMENT
This Technical Service Bulletin describes the verification and resolution of aftertreatment system test malfunctions observed while running at altitudes above 914m.
TSB210076-040720
Apr 7, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of an incorrect radiator mounting panel screw which may cause a chafing or punture on the coolant hose.
TSB210032-040620
Apr 6, 2021
110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
This Technical Service Bulletin describes the verification and resolution of stuck intake air heater relay and intake air heater damage which may result in Fault Code 383, intake air heater malfunctions and trouble starting the engine. This
CMI-032421-B
Mar 24, 2021
010000 STEERING
This is a representative communication from the Cummins producing plant to affected vehicle manfacturers regarding a potential issue with loose high pressure fuel lines on certain L9 engines. The engine plant pursued corrective action with