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Service bulletins for the 2018 Western Star 6900

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.

387 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
FL766 Western St2018-12-10. Service bulletin. ELECTRICAL SYSTEM. Recall Bulletin FL766- Western Star Power Cable Studs
DD13, DD15, DD162018-12-10. Service bulletin. ELECTRICAL SYSTEM. DD13, DD15, DD16 Check Engine Light Flashing or Blinking
0501-182018-10-29. Service bulletin. ENGINE; EQUIPMENT; ELECTRICAL SYSTEM. 0501-18 Aftertreatment Control Module (ACM)
FL7562018-10-29. Service bulletin. SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, AIR; ELECTRICAL SYSTEM. Brake Light Pressure switch may not activate the brake lights with a light application of the brake pedal.
0326-172018-06-18. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. (ACM) (GHG17)
0346-172018-06-18. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. (CPC) (GHG17)
sbw54392018-06-18. Service bulletin. ELECTRICAL SYSTEM. RX Module Fault Codes
0204-17 SPN 52102018-06-18. Service bulletin. ELECTRICAL SYSTEM. 0204-17 SPN 521050 (MCM) (GHG17)
0205-17 SPN 52102018-06-18. Service bulletin. ELECTRICAL SYSTEM. 0205-17 SPN 521052 (MCM) (GHG17)
0405-182018-06-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 0405-18 Symptom Diagnostics - Range Up or Down Shift Issue
0402-182018-06-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ELECTRICAL SYSTEM. 0402-18 SPN 625 (CPC) (GHG14)
0401-182018-06-18. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 0401-18 SPN 1231 (MCM) (EPA10 GHG14)
sbw54392018-06-18. Service bulletin. ELECTRICAL SYSTEM. sbw5439 RX Module Fault Codes
sbw49112018-06-11. Service bulletin. ELECTRICAL SYSTEM. sbw4911 DEF Gauge Reading Incorrectly
1102-172018-06-11. Service bulletin. ELECTRICAL SYSTEM. SPN 157 (MCM) (GHG17)
MY18M12018-06-11. Service bulletin. ELECTRICAL SYSTEM. MY18M1a_05-MAR-2018_Vocational
17TL8Rev12018-06-11. Service bulletin. ELECTRICAL SYSTEM. Vehicle Interface Module
0405-172018-06-11. Service bulletin. ELECTRICAL SYSTEM. SPN 521222 (TCM)
0408-17 SPN 52422018-06-11. Service bulletin. ELECTRICAL SYSTEM. FMI 2- Automatic Gear Selection - Incompatible or missing dataset
0403-172018-06-11. Service bulletin. ELECTRICAL SYSTEM. SPN 677 FMI 2 Starter Switch Inconsistent Diagnostics
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
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

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