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Service bulletins for the 2018 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.

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

By type

By component

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
20TS-03REV2020-06-26. Service bulletin. ENGINE AND ENGINE COOLING. Revised Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change. A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform.
WI20-0042020-04-23. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Warranty Information Letter for Warranty Long Block Program Change. The Detroit Reman Long Block Program has expanded. The expansion reduces complexity in ordering reman engines and promotes stocking reman engines to meet uptime commitments.
SIB0201-202020-03-23. Service bulletin. ENGINE AND ENGINE COOLING. Service Information Bulletin for Cylinder Block Porosity Repair for DD5 and DD8 egnines. Use this procedure to repair oil leaks caused by cylinder block porosity. The low oil pressure, cast areas of the cylinder block can be repaired using this method. J-B Weld is the recommended two-part epoxy for this repair.
20CSA-042020-03-22. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. Customer Service Announcement saying that Service Pack (SP) 3 for DiagnosticLink® 8.11 Standard and Professional will be available for download from the Detroit Diesel server.
20CSA-012020-02-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING. Customer Service Announcement for a policy change regarding Detroit Service Information Bulletins (SIBs) will now have a 60-day expiration, starting on the release day of the bulletin. The intent of a SIB is to notify the service network of a major change to one or more service procedures. Do not save SIBs nor reference them for repairs, as they are uncontrolled and never updated.
ICI20-0042020-01-28. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Important Campaign Information announcing that a revised bulletin for SF588 Medium Duty DD8 Engine Updates is available on DTNAConnect.
ICI20-0022020-01-21. Service bulletin. ENGINE AND ENGINE COOLING. Important Campaign Information Letter announcing that revisions to DDC bulletins D19M5 and D19R2 are available.
D19R2REV12020-01-21. Service bulletin. ENGINE AND ENGINE COOLING. DDC Emission Recall for GHG17 MDEG Platform DD8 – Software Reprogramming For California Inspection and Maintenance. Adding clarification to the Corrective Procedure.
SF5882020-01-17. Service bulletin. POWER TRAIN; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT. Field Service Campaign for Medium Duty DD8 Engine Updates. Certain vehicles with Detroit Diesel MDEG DD8 engines need updates to the air compressor suction line, powertrain control module, oil fill cap, 10-pin connector wiring harness, and fuel filter/engine labels.
WI19-0222020-01-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM. Warranty Information Letter announcing Detroit NOx Sensor Circuit Improvements for GHG17 After Treatment Systems
SB20-0872019-12-20. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin for M2 Surge Tank Shunt Line Clamp Replacement. On some vehicles, the shunt line coolant hose is disconnecting from the surge tank and replacing the constant tension clamp with a Breeze® brand clamp resolves the issue.
17TS92019-10-25. Service bulletin. ENGINE AND ENGINE COOLING. Technical Service Letter communicating that information on DD Heavy Duty Platform Belt and Belt Tensioner can be found on TechLit.
19TL-152019-09-28. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Tool Letter for ICC5 Programming Cable
09-0372019-09-27. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin for Air Cleaner Modifications for Dusty Environments
19CSA-132019-09-09. Service bulletin. ENGINE AND ENGINE COOLING. Service Systems Development provided document to service locations on price list reflects current charges to engine horsepower ratings for HDEP and MDEG engine platforms.
0609-192019-08-08. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. Service Information Bulletin for Symptom Diagnostics - Fluid in the Aftertreatment - Diesel Fuel Contamination.
0308-19 PTO2019-08-08. Service bulletin. ENGINE AND ENGINE COOLING. Service Information Bulletin regarding PTO Dosing. This feature enables Active Regeneration of the DPFs while in PTO mode.
0305-19 SPN 20002019-08-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Service Information Bulletin for Communication Loss with a Common Powertrain Controller (CPC) Module (CPC Heartbeat Message is no Longer Arriving)
0607-192019-08-08. Service bulletin. ENGINE AND ENGINE COOLING. Service Information Bulletin to updated the Fuel Injector Harness sections and relocated to Engine Electrical section.
0107-19 GHG172019-08-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE); ENGINE AND ENGINE COOLING. Service Bulletin to testing of EGR Cooler Water Manifold Assembly in DD13 engines.
SPN 3563 / FMI 22019-08-08. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. HDEP GHG17 engines are not equipped with turbo wastegates. Steps in this troubleshooting involving wastegates were removed.
19TS-62019-08-08. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. The modified parked regeneration strategy has been standard on GHG17 units since the start of GHG17 production and was added to EPA10 and GHG14 units with a software update. The modified regeneration utilizes an improved strategy to clean the DOC inlet face and reduce downtime due to DOC face plugging.
0419-19SPN5210302019-08-08. Service bulletin. ENGINE AND ENGINE COOLING. Updates to troubleshooting guides in Diagnostic Link with newest version
18SP725Rev2019-08-07. Service bulletin. ENGINE; EQUIPMENT; FUEL SYSTEM, DIESEL. This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket, P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.
GHG172019-04-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Letter to customer on Coverage Extension GHG17 After Treatment

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