# Service bulletins for the 2018 Western Star 4700

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.

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

- [PB\-47\-900\-WST](/bulletins/11034507.md), 2026-07-06, Service bulletin: FUEL/PROPULSION SYSTEM. Parts Bulletin for Fluorosilicone Fuel Tank Cap Seals
- [TSB26\-008\-WST](/bulletins/11017553.md), 2025-05-02, Service bulletin: POWER TRAIN. Service Solution for DT12 Oil Plug Ports
- [CXA 3\_25\_NOx](/bulletins/11016309.md), 2025-04-02, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 2\_25\_Turbo Oil Drain](/bulletins/11014819.md), 2025-03-04, Other: ENGINE. CX Advocate for turbo oil drain cracking
- [CXA 2\_25\_NOx](/bulletins/11014818.md), 2025-03-04, Other: ENGINE. CX Advocate for NOx conversion low faults
- [SS778\-WST](/bulletins/11013219.md), 2025-01-29, Other: STEERING. Service Solution for Power Steering Reservoir Fill Cap Venting
- [CXA 1\_16\_Turbo Oil Drain](/bulletins/11013206.md), 2025-01-29, Other: ENGINE. CX Advocate for turbo oil drain cracking
- [CXA 1\_16\_NOx](/bulletins/11013204.md), 2025-01-29, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 1\_16\_DD13 Altitude](/bulletins/11013199.md), 2025-01-29, Other: ENGINE. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
- [CXA 1\_16\_CARB Truck Chec](/bulletins/11013196.md), 2025-01-29, Other: ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On\-Board Diagnostic \(OBD\) test submissions for the Clean Truck Check.
- [CXA 11\_21\_CARB Truck Chec](/bulletins/11011082.md), 2024-12-04, Other: ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On\-Board Diagnostic \(OBD\) test submissions for the Clean Truck Check.
- [WI24\-019](/bulletins/11011076.md), 2024-12-04, Warranty extension: ENGINE. Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
- [CXA\_10\_17\_CARB Truck Chec](/bulletins/11010186.md), 2024-11-07, Other: ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On\-Board Diagnostic \(OBD\) test submissions for the Clean Truck Check.
- [SS1023366\-Detroit](/bulletins/11010143.md), 2024-11-06, Other: ENGINE. Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
- [SS1023366\-Detroit](/bulletins/11008508.md), 2024-10-04, Other: ENGINE. Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
- [CXA 7\_24\_NOx](/bulletins/11005500.md), 2024-08-02, Other: ENGINE. CX Advocate for NOx conversion low faults. Update to CXA 6\_24\_NOx submission.
- [CXA 06\_24\_NOx](/bulletins/11003889.md), 2024-07-09, Other: ENGINE. CX Advocate communication for NOx conversion low faults
- [VSWP Customer Letter](/bulletins/11001976.md), 2024-06-22, Other: ENGINE. Customer letter regarding variable speed water pump.
- [SS734\-WST](/bulletins/11000986.md), 2024-06-05, Other: SUSPENSION. Service Solution for Thread Spring Pin Suspension Alignment \& Installation
- [SS763\-WST](/bulletins/11000984.md), 2024-06-05, Other: ENGINE. Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
- [TSB35\-023\-WST](/bulletins/11000978.md), 2024-06-05, Service bulletin: POWER TRAIN. Technical Service Bulletin for New Final Drive Over Heat Diagnostic
- [ICI24\-006](/bulletins/10251202.md), 2024-03-06, Service bulletin: ENGINE AND ENGINE COOLING. Important Campaign Information letter for FL974 \- Revised Bulletin \& Population
- [FL974](/bulletins/10251200.md), 2024-03-06, Service bulletin: ENGINE AND ENGINE COOLING. Revised Emissions Recall: Cummins DEF Sensor Shortage. REVISION: Some vehicles formerly in Group F have been moved to Group G and have been assigned a new part number as specified in Table 1. An SRT for 'Calibration Code Only: Update or Confirm' has been added, as shown in Table 2, to be used when a new DEF header is not required. There have been some other minor changes to the work instructions and SRT times.
- [FL974](/bulletins/10249516.md), 2024-02-06, Service bulletin: ENGINE AND ENGINE COOLING. Emissions Recall: Cummins DEF Sensor Shortage
- [SBW83\-030](/bulletins/10214907.md), 2022-07-02, Service bulletin: VISIBILITY. Updated Western Star Service Bulletin for HVAC Actuator Replacement

More: [the next page](/v1/vehicles/2018_western-star_4700/bulletins?cursor=2022-07-02_10214907) (JSON)

JSON: [/v1/vehicles/2018_western-star_4700/bulletins](/v1/vehicles/2018_western-star_4700/bulletins)

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