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Technical Service Bulletins

Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.

172,063 Unique Bulletins
4,686,952 Total Records
879 Vehicle Makes
1955–2025 Year Range
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Showing 526 bulletins for WESTERN STAR

sb54313 Aug 6, 2019
WESTERN STAR — 4700, 4800, 4900, 5700, 5900, 6900 (2002–2019) — 103 vehicle combinations
110000 ELECTRICAL SYSTEM
Service Bulletin provided to customers regarding installation of a new MCM 21-pin jumper harness.
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sbw54072 Aug 6, 2019
WESTERN STAR — 5700 (2002–2019) — 36 vehicle combinations
060000 ENGINE AND ENGINE COOLING
Service Bulletin sent out to customers to repair damaged MCM 21-pin connector, terminals, and minor wiring.
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sb54072 Jun 3, 2019
WESTERN STAR — 5700 (2002–2019) — 19 vehicle combinations
114000 ELECTRICAL SYSTEM:WIRING
HDEP MCM 21 Pin Service Jumper Replacement
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CALWS49-001 May 31, 2019
WESTERN STAR — 4900 (2017–2020) — 8 vehicle combinations
350000 EQUIPMENT
Customer Advisory Letter on ATD Inlet Pipe Bellows Assembly
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FL812 Western St May 6, 2019
WESTERN STAR — 4700, 4900 (2019) — 2 vehicle combinations
117000 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
Western Star Odometers Recall Bulletin
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FL812 Apr 24, 2019
WESTERN STAR — 4700 (2019)
350000 EQUIPMENT
Western Star Odometers- recall
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sbw54071 Mar 8, 2019
WESTERN STAR — 5700 (2018–2019) — 2 vehicle combinations
180000 VEHICLE SPEED CONTROL
sbw54071 ICU Odometer Programming
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CALWS32-001 Jan 18, 2019
WESTERN STAR — 4700 (2014–2017) — 12 vehicle combinations
020000 SUSPENSION
Customer Advisory Letter on Transverse Track Rod Tower Bracket
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WSTCAE170-2019 Jan 17, 2019
WESTERN STAR — 4700, 4800, 4900, 5700, 6900 (2019) — 15 vehicle combinations
130000 VISIBILITY
New Valeo A/C Compressor
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sbw00017 Jan 14, 2019
WESTERN STAR — 4700, 4800, 4900, 5700, 6900, WESTERN STAR (2002–2019) — 103 vehicle combinations
350000 EQUIPMENT
Reminder: Paper Service Bulletin Mailings Are Discontinued
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sbw54070 Dec 21, 2018
WESTERN STAR — 4700, 5900 (2002–2019) — 34 vehicle combinations
110000 ELECTRICAL SYSTEM
Service Bulletin- Chassis ECU Programming
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WSTCAE169-2018 Dec 18, 2018
WESTERN STAR — 4700, 4800 (2019–2021) — 6 vehicle combinations
251000 ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)
Electronic Stability Control Requirement for US and Canadian Tractors
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cal54001 Dec 17, 2018
WESTERN STAR — 4900 (2015–2019) — 5 vehicle combinations
111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
Customer Advisory Letter- Battery Power Cable Routing
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sbw26005 DT12 PT Nov 28, 2018
WESTERN STAR — 5700 (2002–2019) — 38 vehicle combinations
100000 POWER TRAIN
Service Bulletin- sbw26005 DT12 PTO Upfit
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FL773 Lowmax Bra Nov 20, 2018
WESTERN STAR — 4900 (2012–2019) — 16 vehicle combinations
030000 BRAKES (PWS)
Recall Bulletin FL773 Lowmax Brake Hoses
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sbw0015 Nov 19, 2018
WESTERN STAR — 4700, 4800, 4900, 5700, 5900, 6900, CONSTELLATION, HERITAGE (2002–2019) — 263 vehicle combinations
020000 SUSPENSION
Service Bulletin Vibration and Harsh Ride Troubleshooting
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wp54018 EPA10 Nov 16, 2018
WESTERN STAR — 4700, 4900, 5700, 6900 (2013–2019) — 14 vehicle combinations
114000 ELECTRICAL SYSTEM:WIRING
Technical Bulletin wp54018 EPA10 Wiring Harness Ordering
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ICI18-035 FL766 Nov 1, 2018
WESTERN STAR — 4700, 4900, 5700, 6900 (2017–2019) — 8 vehicle combinations
110000 ELECTRICAL SYSTEM
Important Campaign Information to Dealer on FL766 - Final Remedy Temporarily Suspended
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sbw0015 Vibratio Oct 31, 2018
WESTERN STAR — 4700, 4800, 4900, 5700, 5900, 6900 (2015–2019) — 29 vehicle combinations
020000 SUSPENSION
Vibration and Harsh ride Troubleshooting
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FL766 Western St Oct 22, 2018
WESTERN STAR — 4700, 4900, 5700, 6900 (2017–2019) — 12 vehicle combinations
110000 ELECTRICAL SYSTEM
Recall Bulletin FL766- Western Star Power Cable Studs
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ICI18-031 FL766 Oct 19, 2018
WESTERN STAR — 4700, 4900, 5700, 6900 (2017–2019) — 12 vehicle combinations
350000 EQUIPMENT
Important Campaign Information- FL766 Interim Recall Ending ? Final Recall to Begin
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DOC-1033768 Aug 13, 2018
WESTERN STAR — 4700, 4800, 4900, 5700 (2010–2019) — 40 vehicle combinations
030000 BRAKES (PWS)
TS 1033768: Western Star Front Brake Squeal - Burnishing Procedure
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TS1033768 Aug 13, 2018
WESTERN STAR — 4700, 4800, 4900, 5700, 6900 (2010–2021) — 61 vehicle combinations
030000 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.
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sbw8329 HVAC Fre Aug 13, 2018
WESTERN STAR — 4700, 4900, 5700 (2007–2017) — 57 vehicle combinations
060000 ENGINE AND ENGINE COOLING
Service Bulletin: HVAC Fresh Air Intake Water Leak
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18CSA15 Jul 31, 2018
WESTERN STAR — 4800, 4900, 5700, 6900 (2014) — 4 vehicle combinations
350000 EQUIPMENT
Release of DiagnosticLink? 8.08 Service Pack 1
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