Service bulletins for the 2019 Western Star 4800
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.
130 on file from NHTSA, as of 2026-10-19.
By type
By component
| SS1034179 | 2020-02-20. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Service Solution on Western Star speedometers. For certain speedometers the speedometer may drop out or the odometer may reset to zero. |
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| SBW54-061 | 2020-02-15. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin for Guidelines for Repairing or Replacing an Electrical Harness. Use the guidelines in this bulletin to determine if a damaged electrical harness should be repaired or replaced. |
| 20CSA-01 | 2020-02-01. 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. |
| SS1034615 | 2020-01-28. Service bulletin. VISIBILITY; EQUIPMENT ADAPTIVE/MOBILITY. Service Solution for Western Star Velvac Door Mirror Seal Curling. The rubber that is rolling back is actually a rubber tape. Originally, the mirrors did not have this tape. Velvac added the tape to address some whistling complaints from customers. |
| SS1034621 | 2020-01-21. Service bulletin. SUSPENSION. Service Solution for Western Star vehicles equipped with Hendrickson AIRTEK Axles experiencing a Harsh Ride. |
| SBW83-020 | 2020-01-17. Service bulletin. VISIBILITY. Service Bulletin on A/C System Receiver-Drier Replacement Guidelines. |
| 17TS-12REV | 2020-01-03. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Technical Service Letter for GHG17 Heavy Duty Engine Platform 1-BOX Aftertreatment System (ATS) Wire Harness experiencing chaffing caused by vibration and dirt collecting in the harness conduit. |
| WI19-022 | 2020-01-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM. Warranty Information Letter announcing Detroit NOx Sensor Circuit Improvements for GHG17 After Treatment Systems |
| SS1034577 | 2019-12-03. Service bulletin. EQUIPMENT; POWER TRAIN; STRUCTURE; EQUIPMENT ADAPTIVE/MOBILITY. Service Solution to address WST Cab drone / vibration / tapping Under acceleration for vehicles w/Eaton Manual Trans. |
| SS1034579 | 2019-12-03. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Service Solution for prematurely failing coolers on WST Models equipped with Allison Transmissions and Rocore Transmission coolers (07-23256-001) with tow pin front X-member. Part number 07-25266-000 is a direct replacement of the failing coolers and requires no modifications or plumbing changes. |
| D19R5 | 2019-11-21. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Updated Recall Safety Bulletin for vehicles in Australia and New Zealand with DD15 engines regarding high pressure fuel lines. Language was clarified that this only applies to Australia and New Zealand. |
| SS1034499 | 2019-10-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Service Solution on failing RX modules in Western Star vehicles. |
| CAL_WS_42001 | 2019-10-30. Service bulletin. SERVICE BRAKES, AIR; EQUIPMENT. Customer Advisory Letter for WABCO HP air dryer turbo cut-off valve replacement. |
| D19R5 | 2019-10-29. Service bulletin. ENGINE AND ENGINE COOLING. Export Recall Safety Bulletin for vehicles in Australia and New Zealand with DD15 engines regarding high pressure fuel lines. |
| 17TS9 | 2019-10-25. 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. |
| P&SSep2019 | 2019-10-08. Service bulletin. EQUIPMENT. Parts and Service Committee meeting minutes |
| DOC-1034500 | 2019-10-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:APPLIANCE:AIR CONDITIONER. Service Solution to fix AC cooling performance due to improper HVAC function. |
| 19TL-15 | 2019-09-28. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Tool Letter for ICC5 Programming Cable |
| WP19-014 | 2019-09-28. Service bulletin. EQUIPMENT. Warranty Policy Change for Delivery-Related Changes: Electronic Proof of Delivery and Loose Component Claim Filing |
| SBW54-073 | 2019-09-28. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin for Powernet Distribution Box Functional Changes |
| SB47-015 | 2019-09-28. Service bulletin. FUEL SYSTEM, GASOLINE. Service Bulletin for Equiflo Fuel System Breather Tube Inspection |
| SB00-08 | 2019-09-28. Service bulletin. EQUIPMENT. Service Bulletin for Dealer Product Report |
| 15CSA-3REV | 2019-09-10. Service bulletin. EQUIPMENT. Customer Service Announcement Letter Revision for Dealers/Distributors Accessing DDEC Backdoor Passwords |
| 19TL-10 NVH | 2019-09-09. Service bulletin. STRUCTURE. Communication to assist the field with service vibration issues on DTNA vehicles |
| 19CSA-12 BCT | 2019-09-09. Service bulletin. ELECTRICAL SYSTEM. PowerNet Assessment Tool Repair Procedure |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.