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Service bulletins for the 2006 Western Star 4900

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.

176 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
CALWS83-0012021-09-29. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY. Customer Advisory Letter for HVAC Actuator Wiring Harness. The wiring harness of the actuator of the fresh air recirculation door, shown in Fig. 1, on Western Star vehicles equipped with Red Dot HVAC systems should be inspected for signs of water intrusion and corrosion.
sb543132019-08-06. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin provided to customers regarding installation of a new MCM 21-pin jumper harness.
sbw54392018-06-18. Service bulletin. ELECTRICAL SYSTEM. RX Module Fault Codes
711-132018-06-18. Service bulletin. ENGINE; ELECTRICAL SYSTEM. 711-13 SPN 100-FMI 4 - ALL YEARS
sbw49112018-06-11. Service bulletin. ELECTRICAL SYSTEM. sbw4911 DEF Gauge Reading Incorrectly
15-0162018-03-05. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 15-016-DLR New Essential Tool For CPWA, CPPRA, Ltd CPPRA, & DSDWC Parties: Cadex CA-12 Battery Tester
sbw54612018-03-05. Service bulletin. ELECTRICAL SYSTEM. sbw5461 Guidelines for Repairing or Replacing an Electrical Harness
sbw54302018-03-05. Service bulletin. ELECTRICAL SYSTEM. sbw5430 Disconnecting or Connecting Daytime Running Lights
719-142018-02-12. Service bulletin. ELECTRICAL SYSTEM. 719-14 SPN 84 (CPC) (GHG14)
710-142018-02-12. Service bulletin. ELECTRICAL SYSTEM. 710-14 SPN 96 (CPC) (GHG14)
711-142018-02-12. Service bulletin. ELECTRICAL SYSTEM. 711-14 SPN 107 (CPC) (GHG14
701-142018-02-12. Service bulletin. ELECTRICAL SYSTEM. 701-14 SPN 168 FMI 0 and 1 (IPPC)(GHG14
706-142018-02-12. Service bulletin. ELECTRICAL SYSTEM. 706-14 SPN 171 FMI 3, 4 (CPC)(GHG14)
709-142018-02-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 709-14 SPN 3216 (MCM) (GHG14)
703-142018-02-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 703-14 SPN 3556 (ACM) (EPA10)
716-142018-02-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 716-14 SPN 4077 (MCM)(EPA07 EPA10;GHG14
704-142018-02-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 704-14 SPN 520200 FMI 6 (IPPC)(GHG14)
705-142018-02-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 705-14 SPN 520203 FMI 6 (IPPC)(GHG14)
707-142018-02-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 707-14 SPN 520229 FMI 3 (IPPC) (GHG14
sbw49112018-01-16. Service bulletin. ELECTRICAL SYSTEM. sbw4911 DEF Gauge Reading Incorrectly
12-0272018-01-16. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 12-027-DLR Detroit and Alliance like Batteries are now interchangeable
sbw47132018-01-05. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. sbw4713 Crank No Start, Loss of Engine Prime on Decked Vehicles
15TL212018-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 15TL21 GHG17 Diagnostic Connector Update
0237-142018-01-05. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID. 0237-14 Engine Brake Solenoid
812-142017-11-17. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. 812-14 FMI 3, 4: Engine Aux. Shutdown Input Failed High and Low

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.