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

FL680 May 1, 2015
WESTERN STAR — 4700, 4900, 5700, 6900 (2014–2015) — 8 vehicle combinations
350000 EQUIPMENT
FL680 Kidde Fire Extinguishers
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sbw0901 May 1, 2015
WESTERN STAR — WESTERN STAR
060000 ENGINE (PWS)
sbw0901 CANCELED: Aftermarket Parts for Air Cleaner Elements
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sbw2024 May 1, 2015
WESTERN STAR — 4700, 4900, 5700, 6900 (2016–2017) — 8 vehicle combinations
060000 ENGINE AND ENGINE COOLING
sbw2024 OAT Coolant Replaces NOAT Coolant in Detroit Engines
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sbw8326 May 1, 2015
WESTERN STAR — 4700, 4800, 4900, 6900 (2010–2016) — 28 vehicle combinations
060000 ENGINE AND ENGINE COOLING
sbw8326 HVAC Blower Motor Noise
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WSTCAE131-2015 Apr 6, 2015
WESTERN STAR — WESTERN STAR
060000 ENGINE AND ENGINE COOLING
OAT COOLANT REPLACES NOAT COOLANT IN DETROIT ENGINES
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sbw2023 Apr 1, 2015
WESTERN STAR — 4700, 4900, 4900 SA, 4900EX, CONSTELLATION (2002–2019) — 58 vehicle combinations
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
sbw2023 Modine Copper/Brass Bolted Downflow Radiator Rebuilding
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sbw3110 Apr 1, 2015
WESTERN STAR — 4700 (2002–2019) — 19 vehicle combinations
350000 EQUIPMENT
sbw3110 Step Clamps Are Not Reusable
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sbw8812 Apr 1, 2015
WESTERN STAR — 4900 — 2 vehicle combinations
162800 STRUCTURE:BODY:HOOD
sbw8812 Hood Pivot Replacement, 4900 Models
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SB-54-58 Mar 2, 2015
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, HERITAGE (2001–2015) — 20 vehicle combinations
114400 ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
WESTERN STAR: INSTRUCTIONS PROVIDED TO HELP REDUCE VIBRATION ON POWER DISTRIBUTION MODULES (PDM), TO PREVENT CRACKING OF FUSES ON HORIZONTALLY MOUNTED POWERTRAIN. *PE UPDATED 03/02/15*LJ
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SB-49-16 Mar 1, 2015
WESTERN STAR — 4700 (2013)
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
WESTERN STAR: TRUCK PARKED EXTENDED TIME, AND DEF FREEZES AND WITH ICE EXPANING BREAKS DEF LINE FITTING CONNECTION TO SUCTION PORT AND WOULD NEED REPLACING. MODEL 4700. *PE
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SB-54-30 Mar 1, 2015
WESTERN STAR — 4700, 4800, 4900, 6900, CONSTELLATION (2012–2015) — 10 vehicle combinations
120000 LIGHTING (PWS)
WESTERN STAR: INFORMATION BEING PROVIDED REGARDING THE DISCONNECTION AND/OR CONNECTING OF DAYTIME RUNNING LIGHTS THAT ARE DISABLED DURING ASSEMBLY. *PE
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sbw0116 Mar 1, 2015
WESTERN STAR — 4700, 4900, 5700, 6900, CONSTELLATION, HERITAGE, WESTERN STAR (2002–2019) — 96 vehicle combinations
060000 ENGINE (PWS)
sbw0116 Pilot Bearing Spacer for Detroit Engines with Eaton transmissions
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sbw4916 Mar 1, 2015
WESTERN STAR — 4700 (2013–2015) — 12 vehicle combinations
060000 ENGINE (PWS)
sbw4916 2013 OBD/GHG14, 6-Gallon DEF Header Suction Line
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sbw5430 Mar 1, 2015
WESTERN STAR — 4700, 4800, 4900, 6900, CONSTELLATION (2002–2019) — 77 vehicle combinations
110000 ELECTRICAL SYSTEM
sbw5430 Disconnecting or Connecting Daytime Running Lights
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sbw5461 Mar 1, 2015
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, CONSTELLATION, HERITAGE (2002–2019) — 128 vehicle combinations
110000 ELECTRICAL SYSTEM
sbw5461 Guidelines for Repairing or Replacing an Electrical Harness
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WSTCAE130-2015 Mar 1, 2015
WESTERN STAR — WESTERN STAR — 2 vehicle combinations
030000 SERVICE BRAKES, HYDRAULIC
BRAKE CHAMBERS - Haldex Life Seal Drive Axle Chambers No Longer Available. RADIO - Pana Pacific to Substitute Equivalent Radio for Data Code 746-1B0
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98-1 Feb 1, 2015
WESTERN STAR — 4700, 4800, 4900, 5700, 5900, 6900 (2002–2019) — 64 vehicle combinations
160000 STRUCTURE
98-1 - Paint Finish Standards
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WSTCAE129-2014 Dec 22, 2014
WESTERN STAR — WESTERN STAR — 2 vehicle combinations
060000 ENGINE AND ENGINE COOLING
COOLANT FILTER - Integrated Coolant Filter Removed from Detroit DD13/DD15/DD16. WINDSHIELD WASHER RESERVOIR - New 2 Gallon Washer Fluid Reservoir for 4700
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WSTCAE128-2014 Nov 21, 2014
WESTERN STAR — WESTERN STAR — 2 vehicle combinations
110000 ELECTRICAL SYSTEM
BATTERIES - Limited Applications for Absorbed Glass Mat Batteries. FIFTH WHEELS - Fontaine to Replace Certain Ultra NT Stationary Fifth Wheels. FOOT PEDALS - All Models to Receive New Suspended Accelerator Pedals
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sbw5462 Nov 1, 2014
WESTERN STAR — 4700, 4800, 4900, 6900 (2010–2016) — 44 vehicle combinations
350000 EQUIPMENT
sbw5462 Aftertreatment Harness Modification
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WSTCAE127-2014 Oct 31, 2014
WESTERN STAR — WESTERN STAR
350000 EQUIPMENT
POSITIONING/LOCATING SYSTEMS - Qualcomm MCT/IMCT Wiring No Longer Available
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WSTCAE126-2014 Oct 2, 2014
WESTERN STAR — WESTERN STAR
200000 WHEELS
HUBS - ConMet PreSet Plus Hubs
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WSB-54-60 Oct 1, 2014
WESTERN STAR — WESTERN STAR
114400 ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
WESTERN STAR: POOR FUSE RETENTION MAY BE EXPERIENCE ON SOME POWERNET DISTRIBUTION BOX (PNDB), CAUSING INTERMITTENT OPERATION OF SUPPLIED DEVICES BY THESE CIRCUITS. MODEL 4800, 4900, 4700, 5900, 6900. *PE
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WSTCAE125-2014 Sep 3, 2014
WESTERN STAR — WESTERN STAR
350000 EQUIPMENT
RADIOS - New Data Codes and Features
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20-18 Sep 1, 2014
WESTERN STAR — 4800, 4900 (2011–2015) — 20 vehicle combinations
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
20-18 - Western Star 4800 and 4900 Radiator Mounting, Update?EPA10
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