# Service bulletins for the 2014 Western Star 5700

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.

405 bulletins from NHTSA, as of 2026-10-19.

- [ICI24\-031](/bulletins/11007487.md), 2024-09-07, Other: ENGINE. 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.
- [SBW83\-030](/bulletins/10214907.md), 2022-07-02, Service bulletin: VISIBILITY. Updated Western Star Service Bulletin for HVAC Actuator Replacement
- [ICI22\-017](/bulletins/10210548.md), 2022-05-03, Service bulletin: POWER TRAIN. 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 July 1, 2022.
- [SBW49\-020](/bulletins/10208391.md), 2022-03-03, Service bulletin: ENGINE AND ENGINE COOLING. Western Star Service Bulletin for DEF Connector Reinforcement Caps
- [ICI21\-030](/bulletins/10202728.md), 2021-11-03, Service bulletin: VISIBILITY. SF626 Western Star Window Replacement Inspection Notification. This letter is to inform you that Field Service Campaign SF626 Western Star Window Replacement Inspection Notification campaign was released.
- [SBW54\-080](/bulletins/10198595.md), 2021-06-29, Service bulletin: ELECTRICAL SYSTEM. Western Star Service Bulletin for Key Fob ID Retention. Key fobs for remote keyless entry on Western Star vehicles are delivered in packages that include a unique ID for the fob. The ID is required when pairing the key fob with a vehicle.
- [SS1033094](/bulletins/10195575.md), 2021-06-09, Service bulletin: FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:MANIFOLD PRESSURE \(MAP\) SENSOR. Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform...
- [SBW98003](/bulletins/10192962.md), 2021-05-10, Service bulletin: STRUCTURE:BODY. Paint Peeling, Hood.
- [16TS\-08REV](/bulletins/10190555.md), 2021-04-24, Service bulletin: ENGINE AND ENGINE COOLING. Detroit Technical Service Letter for DD13 Cylinder Head and Cylinder Head Gasket Change.
- [WI21\-008](/bulletins/10190549.md), 2021-04-23, Service bulletin: EQUIPMENT. 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.
- [DT12 Trans Chafe](/bulletins/10190020.md), 2021-04-08, Service bulletin: EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN. 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 contacting the transmission TCU case. To reduce potential chafing areas, the proposed short\-term containment was to route the wiring harness using additional tie straps. This communication applies to Freightliner and Western Star vehicles built with DT12 transmissions.
- [SBW54\-057](/bulletins/10189332.md), 2021-03-25, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. Western Star Service Bulletin for Powernet Troubleshooting Guide \- Batteries, Path, Alternator, and Starter. When troubleshooting powernet issues, use the BCT\-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter is the only Daimler\-approved tool for troubleshooting vehicle Powernet issues.
- [D21M2](/bulletins/10187892.md), 2021-03-02, Service bulletin: ENGINE AND ENGINE 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.
- [WP20\-018R](/bulletins/10184029.md), 2020-12-12, Service bulletin: STEERING; POWER TRAIN. Revised Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing. Revisions are in blue. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on\-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one \(1\) or two \(2\) years and current parts, labor, and reimbursement policies apply.
- [WP20\-018](/bulletins/10183988.md), 2020-12-12, Service bulletin: STEERING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; POWER TRAIN. Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on\-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one \(1\) or two \(2\) years and current parts, labor, and reimbursement policies apply.
- [SBW26\-005](/bulletins/10183736.md), 2020-12-07, Service bulletin: POWER TRAIN. Revised Western Star Service Bulletin forDT12 PTO Upfit. This bulletin replaces the version dated 09/23/2019. DDCSN and Power Service Literature references have been removed.
- [JOYSON LTR](/bulletins/10181849.md), 2020-11-01, Service bulletin: SEAT BELTS. Joyson Safety Systems letter informing DTNA about Hikone Webbing Investigation. JSS is near completion of an initial investigation regarding data integrity issues at the seatbelt webbing manufacturing facility in Hikone, Japan acquired from Takata in April of 2018.
- [TechTalk7679](/bulletins/10180382.md), 2020-10-01, Service bulletin: ENGINE AND ENGINE COOLING. Tech Talk discussion on repair verification for codes like 'low air flow' when a trailer is not available.
- [TechTalk4725](/bulletins/10180350.md), 2020-09-30, Service bulletin: STEERING; EQUIPMENT. Tech Talk discussion about power steering fluid.
- [20TS\-05](/bulletins/10177692.md), 2020-07-31, Service bulletin: ENGINE AND ENGINE COOLING. Technical Service Letter for EPA10, GHG14, GHG17 Diesel Particulate Filter \(DPF\) Compatibility. Note: This document supersedes 14 TS\-25 and 15 TS\-8. Detroit Diesel has determined that some, Diesel Particulate Filters \(DPFs\) are compatible in pairs and or can be mixed together within EPA10 and GHG14 Systems. For 1\-BOX and Two\-Box Configuration Aftertreatment Systems \(ATS\), this is only possible when the filters are used in accordance with Tables 1 and 2 shown below. All other DPFs, NOT mentioned below, are NOT compatible.
- [TS1033768](/bulletins/10177689.md), 2020-07-31, Service bulletin: SERVICE BRAKES, HYDRAULIC. Training Solution for Western Star Front Brake Squeal \- Burnishing Procedure. The brake burnishing procedure can be used to help reduce brake related noise or imbalance concerns which may occur in the field.
- [TS1033014](/bulletins/10177608.md), 2020-07-31, Service bulletin: EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; ENGINE AND ENGINE COOLING. Training Solutions for Fuel Leak Found at High Pressure Fuel Pump Weep Hole for Heavy Duty DD Engines. Occasionally we see trucks come in with fuel leaking from the high pressure fuel pump weep hole. This is NOT a defect in the pump and further diagnostics need to be performed to find the root cause.
- [SBW42\-013](/bulletins/10177607.md), 2020-07-31, Service bulletin: SERVICE BRAKES, AIR:DRUM:SHOES/LININGS; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:SHOES/LININGS. Western Star Service Bulletin for Meritor Steer Axle Drum Brake Squeal. Some Western Star 5700 vehicles equipped with Meritor steer axle drum brakes with a front axle rating less than 13,300 lb \(6038 kg\) have experienced brake squealing noise when the service brakes are applied at lower speeds. NOTE: This is a nuisance noise issue and not a failure. The solution given in this service bulletin may fix this issue.
- [SBW31\-016](/bulletins/10177605.md), 2020-07-31, Service bulletin: SUSPENSION:REAR; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Western Star Bulletin for Non\-Airliner Rear Suspension Crossmember Fastener Change. With the start of production on March 2, 2020, the fasteners used to assemble the non\-Airliner rear suspension \(bogie\) crossmember have changed. The rear suspension bogie crossmember gussets to the C\-channel will be assembled with 5/8–18 fasteners. This change includes a revision to a higher friction nut that requires an increase in tightening torque. The new higher friction nut can be identified by its green color.
- [SBW60\-027](/bulletins/10177649.md), 2020-07-28, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Service Bulletin for Guidelines for Cleaning and Disinfecting Cab Surfaces. The following guidelines are for cleaning and disinfecting commonly touched surfaces on the inside and outside of a vehicle. For best results, follow cleaning and disinfecting procedures fully and consistently. Ensure there is adequate ventilation when using chemicals. NOTICE: Wipe down fragile components carefully to avoid damaging the vehicle.

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