2015 Freightliner Cascadia Technical Service Bulletins

837 technical service bulletins (TSBs) are on record for the 2015 Freightliner Cascadia. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11027503Dec 11, 2025Steering. Fleet Communications for Power Steering Resevoir - NTF Replacements
• 11026453Nov 20, 2025Engine. Fleet Communications for Power Steering Reservoir Fill Cap Venting
• 11016328Mar 26, 2025Other or unknown. Technical Service Bulletin for Load Dump Switch Inspection and Installation on Dometic Refrigerators
• 11016309Mar 20, 2025Engine. CX Advocate for NOx conversion low faults
• 11014819Feb 20, 2025Engine. CX Advocate for turbo oil drain cracking
• 11014818Feb 20, 2025Engine. CX Advocate for NOx conversion low faults
• 11013206Jan 16, 2025Engine. CX Advocate for turbo oil drain cracking
• 11013204Jan 16, 2025Engine. CX Advocate for NOx conversion low faults
• 11013201Jan 16, 2025Engine. CX Advocate for GATS2.4 being expanding to DD15
• 11013199Jan 16, 2025Engine. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
• 11013216Jan 14, 2025Steering. Service Solution for Power Steering Reservoir Fill Cap Venting
• 11012298Dec 19, 2024Engine. Important Campaign Information letter for DDC D24R4 - Campaign Reactivated
• 11012297Dec 16, 2024Engine. Important Campaign Information letter for DDC D24R4 - Campaign Inactivated
• 11011115Nov 27, 2024Engine. Detroit Emission recall for GHG14 DETROIT DD16 Software Reprogramming
• 11011114Nov 27, 2024Engine. Detroit Emission recall for GHG14 DETROIT DD16 Software Reprogramming
• 11011104Nov 27, 2024Engine. Detroit Emission recall for GHG14 DETROIT DD16 Software Reprogramming
• 11007516Aug 15, 2024Engine. CX Advocate for clean idle label placement
• 11007487Aug 15, 2024Engine. Important Campaign Information letter for DDC D23M3 - Campaign Reactivated and Extended. Field Service Campaign D23M3 - GHG17 DETROITTM DD16® Vibration Damper Replacement has been extended for an additional 6 months.
• 11005504Jul 18, 2024Engine. CX Advocate for Oil Suction manifolds
• 11005500Jul 18, 2024Engine. CX Advocate for NOx conversion low faults. Update to CXA 6_24_NOx submission.
• 11003889Jun 21, 2024Engine. CX Advocate communication for NOx conversion low faults
• 10225500Oct 31, 2022Engine cooling, Electrical system. Service Solution for DPF Harness Rub-Chafe onTrans-Wire Braided Air Hose.
• 10214910Jun 30, 2022Electrical system. Service Solution for SSAM Fault 520197/31 - MQ SwitchMalfunction Troubleshooting
• 10210548Apr 13, 2022Transmission and drivetrain. Important Campaign Information Letter for DDC D21M1 Termination Date Extended. This letter is to inform you that a revised bulletin for Detroit Diesel Field Service Campaign D21M1, DT12 Transmission Drive Shaft Cover Plug Reseal has been EXTENDED for an additional three months. Please use the extended termination date for all work under D21M1 from this point forward. REVISION: D21M1 termination date extended to…
• 10209296Mar 2, 2022Engine cooling. Revised Freightliner Service Bulletin for ParkSmart Eberspaecher Auxiliary Heater Service. This bulletin replaces the version dated May 2015. The note in General Information has been revised to include New Cascadia. Espar information has been changed to reflect a company name change to Eberspaecher.
• 10208389Feb 15, 2022Engine cooling. Freightliner Service Bulletin for DEF Connector Reinforcement Caps.
• 10199899Jun 14, 2021Body and structure. End of Production for the Freightliner P3 Cascadia Sales Cabs. Due to low production volumes, DTNA will be discontinuing the production of the Freightliner Cascadia P3 Sales Cabs.
• 10191828Apr 30, 2021Engine cooling, Fuel system. Tech Talk discussion on DD15 injector cups.
• 10191149Apr 23, 2021Transmission and drivetrain. Service Solution for FTL DT12 Trans Control Harness Chaffing - PT Can faults. Transmission will not shift into Gear while driving or will not start and trigger multiple PT CAN Fault Codes.
• 10191143Apr 19, 2021Transmission and drivetrain. Detroit Field Service Campaign for DT12 Transmission Drive Shaft Cover Plug Reseal. Daimler Trucks North America LLC, on behalf of its DETROIT Powertrain Division, is initiating Field Service Campaign D21M1 on certain DT12 transmissions in order to reseal the bypass plugs of the drive shaft cover located in front housing.
• 10190555Apr 19, 2021Engine cooling. Detroit Technical Service Letter for DD13 Cylinder Head and Cylinder Head Gasket Change.
• 10190551Apr 19, 2021Engine cooling. Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times (SDTs) shown. The updated after treatment system (ATS) diesel exhaust fluid (DEF) pump times will be applied to repair orders opened on or after April 12, 2021.
• 10190549Apr 6, 2021Equipment. Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown. The updated times will be applied to repair orders opened on or after April 5, 2021.
• 10189340Mar 24, 2021Equipment. Updated Freightliner Service Bulletin for Espar Service Information. This bulletin replaces the version dated January 1, 2015. New Cascadia has been added to the model list.
• 10189319Mar 22, 2021Electrical system, Equipment. Warranty Policy Letter for battery tags. DTNA determined that since adopting the AutoMeter BCT-460DTNA Powernet Assessment Tool (AutoMeter) as the required powernet system tester, not all battery tags have to be retained support Warranty-related claims.
• 10190020Mar 10, 2021Equipment, Transmission and drivetrain. DTNA received a field notification on multiple units regarding diagnostic fault codes that were found to be causing issues to the After Treatment Control Module (ACM). These fault codes indicated that the ACM communication message was not received by the Motor Control Module (MCM) which in certain cases, led to a 25% engine de-rate situation. Further diagnosis revealed that the DT12 wiring harness was chafing and…
• 10188211Feb 28, 2021Engine cooling, Electrical system. Tech Talk discussion on CHECK ENGINE LIGHT AND CHECK TRANS LIGHT ON.
• 10188217Feb 26, 2021Engine cooling, Brakes, Electrical system. Tech Talk discussion on SCR ADS Self-Check.
• 10187532Feb 25, 2021Engine cooling, Equipment. Freightliner Service Bulletin for Programming Chassis Electronic Control Units (ECUs) With DiagnosticLink.
• 10188033Feb 21, 2021Engine cooling. Tech Talk discussion on SCR ADS Self-Check.
• 10187892Feb 19, 2021Engine cooling. DDC Field Service Campaign for GHG14 DETROIT DD13 with One-Box Aftertreatment Software Reprogramming. Certain Detroit Model Year 2013 to 2015 GHG14 DD13 engines that are registered in California will require reprogramming to a minimum of the MCM software version and fuel map version listed below: MCM Software Version 4.7.0.0 ZGS 005.
• 10187835Feb 19, 2021Engine cooling. Starting on November 23, 2020, DiagnosticLink 8.13 (Build 4527) was made available. Current subscribers of DiagnosticLink 8.11 or 8.12 may upgrade to DiagnosticLink 8.13 at no cost. All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.
• 10188134Feb 15, 2021Transmission and drivetrain. Tech Talk continuing discussion on DT12 TRYING TO DOWN SHIFT.
• 10187524Feb 15, 2021Equipment. Superseding Letter to an Important Campaign Information Letter to announce a reimbursement available to dealers for travel to a customer's location to perform a recall or field service campaign. Potential travel reimbursement applies to DTNA truck dealers and Detroit Diesel distributors. Thomas Built Buses will be addressed separately. This letter supersedes ICI20-022R.
• 10187444Feb 15, 2021Engine cooling, Electrical system, Equipment. Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.
• 10187881Feb 10, 2021Engine cooling. Important Campaign Information Letter announcing that a revision for Detroit Diesel Field Service Campaign D19M7. This letter is to inform you that Detroit Field Service Campaign D19M7 REV2, Pre-Series Cascadia Emission Label Replacement has been EXTENDED for an additional four months and re-activated on DTNA Connect. Please use the extended termination date for all work under D19M7 REV2 from this point forward.
• 10187879Feb 10, 2021Engine cooling. Revision for Field Service Campaign for pre-series Cascadia and New Cascadia Emission Label replacement. Additional sections have been updated.
• 10187598Feb 10, 2021Engine cooling, Electrical system. Service Solution for P3 - CEL On and Engine de-rate due to ATD Chassis Harness Circuit 532M5+ at DEF Heater Supply location is shorted.
• 10187440Feb 8, 2021Equipment. Revised Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance. In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimize processes. Revisions are in blue font.
• 10186616Feb 2, 2021Engine cooling. Discussion on DT12 trying to down shift

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