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Service bulletins for the 2021 Freightliner 114SD

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.

153 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
CXA 1_16_NOx2025-01-29. Other. ENGINE. CX Advocate for NOx conversion low faults
CXA 1_16_DD13 Altitude2025-01-29. Other. ENGINE. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
CXA 1_16_CARB Truck Chec2025-01-29. Other. ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
D24R2-OWN LTR2025-01-06. Emissions. ENGINE. Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
D24R2-DLR LTR2025-01-06. Emissions. ENGINE. Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
D24R2-Bulletin2025-01-06. Emissions. ENGINE. Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
TSB35-039-FTL2025-01-03. Service bulletin. POWER TRAIN. Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management
TSB35-039-FTL2024-12-06. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management.
SS1032998-FTL2024-12-04. Other. VISIBILITY/WIPER. Service Solution for M2 mirror wind noise
CXA 11_21_M2, SD Transfer2024-12-04. Other. POWER TRAIN; ENGINE. CX Advocate for M2 and SD Vehicles Transfer Case Failures Due to Excessive Vehicle Speed (SS 3155-FTL)
CXA 11_21_CARB Truck Chec2024-12-04. Other. ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
WI24-0192024-12-04. Warranty extension. ENGINE. Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
TSB91-016-FTL2024-12-04. Service bulletin. SEATS. Technical Service Bulletin for Repairing Seat Occupancy Sensor for ISRI, SEARS and National Truck Seats
CXA_10_17_CARB Truck Chec2024-11-07. Other. ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
SS3155-FTL2024-11-06. Other. ENGINE; POWER TRAIN. Service Solution for M2 and SD Vehicles Transfer Case Failures Due to Excessive Vehicle Speed
SS1023366-Detroit2024-11-06. Other. ENGINE. Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
PB01-0092024-11-06. Other. ELECTRICAL SYSTEM. Parts Bulletin for Powertrain Power Distribution Module (PTPDM) Kit Replacement
CXA 9_24_NFD fill plug2024-10-04. Other. POWER TRAIN. CX Advocate for NFD fill plugs
CXA 9_24_MDEG Updates2024-10-04. Other. ENGINE. CX Advocate for MDEG Updates
SS1023366-Detroit2024-10-04. Other. ENGINE. Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
CXA 8_24_MDEG Updates2024-09-07. Other. ENGINE. CX Advocate for MDEG Updates
CXA 8_24_Conmet Oil Pan2024-09-07. Other. ENGINE. CX Advocate for ConMet Oil Pan Insert Additional Failures
TSB35-039-FTL2024-09-07. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management. Description of Revisions: The bulletin replaces the version dated 05/14/2024. Creation date has been updated.
CXA 7_24_MDEG Updates2024-08-02. Other. ENGINE. CX Advocate for MDEG Updates
CXA 7_24_NOx2024-08-02. Other. ENGINE. CX Advocate for NOx conversion low faults. Update to CXA 6_24_NOx submission.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.