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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
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Showing 526 bulletins for WESTERN STAR

PAB054 Dec 4, 2012
WESTERN STAR — 4700 (2002–2018) — 18 vehicle combinations
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PAB054, USA-ONLY GM MOBILITY AID FORM
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SBW-2018 Dec 1, 2012
WESTERN STAR — 4900 (2010–2013) — 4 vehicle combinations
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
WESTERN STAR: RADIATOR MOUNTING. SOME EPA COMPLIANT WESTERN STAR 4900 VEHICLES EQUIPPED WITH 1700 SQ IN ALUMINUM RADIATORS, MANUFACTURED MARCH 2010 AND LATER, WITH SPECIFIC COMBINATION OF ENGINE OPERATING PARAMETERS, MAY HAVE RADIATOR FAILU
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sbw2018 Dec 1, 2012
WESTERN STAR — 4800, 4900 (2002–2019) — 35 vehicle combinations
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
sbw2018 Western Star 4800 and 4900 Radiator Mounting
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sbw4713 Dec 1, 2012
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, CONSTELLATION (2002–2018) — 83 vehicle combinations
113000 ELECTRICAL SYSTEM:STARTER ASSEMBLY
sbw4713 Crank No Start, Loss of Engine Prime on Decked Vehicles
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SB-54-53 Nov 1, 2012
WESTERN STAR — CONSTELLATION (2009–2012) — 5 vehicle combinations
091200 FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM
WESTERN STAR TRUCKS: THE FUEL GUAGE LEVEL MAY DROP TO EMPTY FOR ABOUT 25 MILES AND THEN WILL RETURN TO NORMAL. *RM UPDATED 4/2/13. *PE
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sbw3109 Nov 1, 2012
WESTERN STAR — 4700, 4900, 6900, CONSTELLATION (2002–2019) — 65 vehicle combinations
350000 EQUIPMENT
sbw3109 Huck-Spin 2 Changeover
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sbw5453 Nov 1, 2012
WESTERN STAR — CONSTELLATION (2009–2013) — 5 vehicle combinations
070000 FUEL SYSTEM, GASOLINE
sbw5453 EPA10 Fuel Level Gauge
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sbw4205 Sep 1, 2012
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, CONSTELLATION (2002–2018) — 84 vehicle combinations
045200 SERVICE BRAKES, AIR:DISC:PADS
sbw4205 Bendix Air Disc Brake Thermal Overload Issues
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sbw4910 Sep 1, 2012
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, CONSTELLATION (2002–2018) — 96 vehicle combinations
060000 ENGINE (PWS)
sbw4910 Gentech DEF Coolant-Flow Solenoid, Testing and Replacement
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sbw4911 Sep 1, 2012
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, CONSTELLATION, WESTERN STAR (2002–2019) — 168 vehicle combinations
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
sbw4911 DEF Gauge Reading Incorrectly
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sbw4206 Aug 1, 2012
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, CONSTELLATION (2002–2019) — 143 vehicle combinations
030000 BRAKES (PWS)
sbw4206 Brake Shimmy - Meritor SteeLite X30 Brake Drum With Excessive Runout
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WSB-42-05 Aug 1, 2012
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, CONSTELLATION (2002–2013) — 46 vehicle combinations
045000 SERVICE BRAKES, AIR:DISC
WESTERN STAR: AN ISSUE WITH THERMAL OVERLOAD ON BENDIX AIR DISC BRAKES WHERE ABS SENSOR WIRES MELTS, BRAKE ACTUATOR FAILS TO PROPERLY OPERATE DUE TO VENT HOLE IN BOTTOM NOT OPENING, CALIPERS COATED WITH RED OR BRIGHT ORANGE DUST AND TAPPED
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WSB-42-6 Aug 1, 2012
WESTERN STAR — 4700, 4800, 4900, 5900, 6900, CONSTELLATION (2002–2013) — 9 vehicle combinations
044000 SERVICE BRAKES, AIR:DRUM
WESTERN STAR: WHEN APPLYING THE BRAKES, SOME TRUCKS WILL EXPERIENCE SEVERE SHAKING OR SHIMMYING. MODELS CONSTELLATION, 4700, 4800, 4900, 6900 AND 5900. NO MODEL YEARS LISTED. *PE UPDATED 11/1/12. *PE
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WSB-49-9 Mar 1, 2012
WESTERN STAR — CONSTELLATION (2012) — 4 vehicle combinations
060000 ENGINE (PWS)
WESTERN STAR: ON SOME TRUCKS, THE EXHAUST BELLOWS HAVE A NEW AND ROBUST FLEX TUBE DESIGN, WHICH REQUIRES A SLIP CLAMP ASSEMBLY, NOW AVAILABLE. MODELS CONSTELLATION. NO MODEL YEARS LISTED. *PE
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ICI12-024 Jan 8, 2012
WESTERN STAR — 4900 (2002–2019) — 21 vehicle combinations
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
ICI12-024-DLR SF453 - Termination Date Extended
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SB-49-7 Jan 1, 2012
WESTERN STAR — CONSTELLATION, HERITAGE (1995–1999) — 9 vehicle combinations
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
WESTERN STAR: EPA07 EXHAUST BELLOWS REPLACEMENT. IF A FAILED EXHAUST BELLOWS ON AN EPA07 ENGINE INSTALLATION, REPLACE IT WITH A NEW STYLE BELLOWS, AND TWO NEW MATCHING CLAMPS. NO MODEL YEARS LISTED. *PE UPDATED ON 6/14/2011. *KB
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SF-454AB Dec 1, 2011
WESTERN STAR — 4900 (2009–2010) — 4 vehicle combinations
060000 ENGINE AND ENGINE COOLING
DAIMLER TRUCK: CERTAIN TRUCKS ARE BEING MODIFIED DUE TO AIR CLEANER INLET CAPS INGESTING UNDER HOOD AIR CAUSING THE TURBO INLET TEMPERATURES TO BE TOO HIGH. *PE
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GIB-42-4 Jul 1, 2011
WESTERN STAR — CONSTELLATION (2011–2012) — 2 vehicle combinations
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
DAIMLER TRUCKS: THERE IS A REPETITIVE "SPITTING" NOISE MAY BE HEARD FROM THE AIR DRYERS. *RM
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SB-54-52 Jul 1, 2011
WESTERN STAR — CONSTELLATION
117000 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
WESTERN STAR: INFORMATION ON THE MODIFICATION OF MODIFICATION FROM PX MODULES TO STAND-ALONE GAUGES. *RM
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SB-47-11 Jun 1, 2011
WESTERN STAR — CONSTELLATION (2001–2012) — 12 vehicle combinations
072200 FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
WESTERN STAR TRUCKS: FUEL LINE FITTING REPLACEMENT INFORMATION. *RM
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SB-32-13 May 1, 2011
WESTERN STAR — CONSTELLATION, HERITAGE (1995–2012) — 16 vehicle combinations
021230 SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM
WESTERN STAR TRUCKS: THE REAR SUSPENSION AIR-SPRING ASSEMBLY HAS BEEN REDESIGNED. *RM
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SB-35-06 May 1, 2011
WESTERN STAR — CONSTELLATION, HERITAGE (1995–2001) — 12 vehicle combinations
022520 SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY
WESTERN STAR TRUCKS: INSTRUCTIONS TO REMOVE, INSPECT, AND RESEAL THE LOWER PINION COVER ON THE REAR AXLES. *RM
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SB-35-07 May 1, 2011
WESTERN STAR — CONSTELLATION, HERITAGE (1995–2012) — 16 vehicle combinations
021600 SUSPENSION:FRONT:WHEEL BEARING
WESTERN STAR TRUCKS: INFORMATION ON WHEEL BEARING LUBRICATION IN THE REAR AXLE. *RM
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SB-46-9 May 1, 2011
WESTERN STAR — CONSTELLATION (1995–2012) — 11 vehicle combinations
015100 STEERING:HYDRAULIC POWER ASSIST:PUMP
WESTERN STAR TRUCKS: THE PROCEDURE TO REPLACE THE POWER STEERING PUMP WITH A DIFFERENT VERSION PUMP. *RM
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SB-49-8 Mar 1, 2011
WESTERN STAR — CONSTELLATION, HERITAGE (1995–2001) — 10 vehicle combinations
061000 ENGINE AND ENGINE COOLING:ENGINE
WESTERN STAR TRUCKS: THERE ARE NEW CGI BELLOWS DUE TO CURRENT ONES THAT ARE PRONE TO FAILURE. *RM
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