2021 Western Star 6900

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 11011076Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
• 11010143Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
• 11008508Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
• 11007517CX Advocate for ConMet Oil Pan Insert Additional Failures
• 11007513CX Advocate for AutoElevate Disablement Gen5 Engines
• 11007512CX Advocate for benefits of Autoelevate and hydrocarbon faults
• 11005494CX Advocate for ConMet Oil Pan Insert Additional Failures
• 11005493CX Advocate for AutoElevate Disablement Gen5 Engines
• 11003924CX Advocate communication for clutch bolts
• 10253879Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
• 10214907Updated Western Star Service Bulletin for HVAC Actuator Replacement
• 10208391Western Star Service Bulletin for DEF Connector Reinforcement Caps
• 10202728SF626 Western Star Window Replacement Inspection Notification. This letter is to inform you that Field Service Campaign SF626 Western Star Window Replacement Inspection Notification campaign was released.
• 10198595Western Star Service Bulletin for Key Fob ID Retention. Key fobs for remote keyless entry on Western Star vehicles are delivered in packages that include a unique ID for the fob. The ID is required when pairing the key fob with a vehicle.
• 10195575Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform...
• 10193771Portland Truck Plant Paint Changes
• 10190551Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times (SDTs) shown. The updated after treatment system (ATS) diesel exhaust fluid (DEF) pump times will be applied to repair orders opened on or after April 12, 2021.
• 10190549Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown. The updated times will be applied to repair orders opened on or after April 5, 2021.
• 10189335Updated Western Star Parts Technical Bulletin for Universal Design Floor Mats. This bulletin replaces the version dated February 12, 2021. Information about parts notes in the Paragon system have been added and the trimming instructions are revised. Universal floor mat designs fit multiple cab configurations and may require trimming. Trim lines displaying size options are scored into the pad side of the mat; use an existing floor mat as a guide for optimal results. The new mat should not interfere with safety-critical equipment, such as foot pedals.
• 10189332Western Star Service Bulletin for Powernet Troubleshooting Guide - Batteries, Path, Alternator, and Starter. When troubleshooting powernet issues, use the BCT-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter is the only Daimler-approved tool for troubleshooting vehicle Powernet issues.
• 10189319Warranty Policy Letter for battery tags. DTNA determined that since adopting the AutoMeter BCT-460DTNA Powernet Assessment Tool (AutoMeter) as the required powernet system tester, not all battery tags have to be retained support Warranty-related claims.
• 10187900Warranty Information Letter for Detroit Resources: Exploded View DD Platform and DT12 Posters. Detroit's TechComm team created visual aids for the network and released exploded view posters for DD platform engines. In early 2021, Detroit added multiple DT12 posters.
• 10187835Starting on November 23, 2020, DiagnosticLink 8.13 (Build 4527) was made available. Current subscribers of DiagnosticLink 8.11 or 8.12 may upgrade to DiagnosticLink 8.13 at no cost. All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.
• 10187524Superseding Letter to an Important Campaign Information Letter to announce a reimbursement available to dealers for travel to a customer's location to perform a recall or field service campaign. Potential travel reimbursement applies to DTNA truck dealers and Detroit Diesel distributors. Thomas Built Buses will be addressed separately. This letter supersedes ICI20-022R.
• 10187444Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.
• 10187443Warranty Information Letter for Body Builder/Truck Equipment Manufacturer Demonstration Program.
• 10187440Revised Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance. In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimize processes. Revisions are in blue font.
• 10184788Western Star Service Bulletin for Axle Flange Gasket Replaced with O-Ring. Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning the hub when the axle shaft is removed.
• 10184029Revised Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing. Revisions are in blue. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one (1) or two (2) years and current parts, labor, and reimbursement policies apply.
• 10183988Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one (1) or two (2) years and current parts, labor, and reimbursement policies apply.
• 10183954Special Publication letter for Two-Filter Fuel System KM59 GEN1 DD15 DD16 Severe Duty High Pressure Fuel Rail Feed Lines Service Kit.
• 10182009Tech Talk discussion on SS 1034711 HADLEY MIRROR
• 10181368Revised Technical Service Letter for Detroit DT12 TCM GHG17 Only; Bootloader Update. On Detroit DT12 equipped vehicles, it may be necessary to complete an additional step in the programming process when updating the TCM software.
• 10181052DDC Technical Service Letter for GHG17 DD Platform Heavy Duty Oil Pan Drain Plug Inserts. Some GHG17 DD Platform Heavy Duty oil pans may experience an issue with the oil pan drain plug insert spinning during removal or installation while completing an oil change. Leaking may also be observed at the drain plug and/or other plugs in the oil pan.
• 10181051Western Star Service Bulletin for Connecting the Chassis Harness Connector to the Cab Front Wall 104-Way Pass-Through Connector. This bulletin describes how the chassis harness connector functions and how to verify the four locks of the terminal stabilizer plate on the 104-way pass-through connector are in pre-stage position. The terminal stabilizer plate is the white plastic plate located inside the 104-way pass-through connector. The stabilizer plate floats up and down in the pass-through connector to protect the terminals from being damaged when the chassis harness connector is removed and connected.
• 10180517Detroit Diesel Special Publication informing about Heavy Duty Friction Style Belt Tensioner Kit. This heavy duty friction style belt tensioner kit contains the belt tensioner and two M10 bolts to correctly pin the friction style belt tensioner. The M10x80mm bolt is used to pin the engine cooling fan drive arm. The M10x50mm bolt is used to pin the engine accessory drive arm.
• 10180503Revised Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change. A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform. The revision includes additional information on retrofit and service kits.
• 10180382Tech Talk discussion on repair verification for codes like 'low air flow' when a trailer is not available.
• 10180350Tech Talk discussion about power steering fluid.
• 10179249Customer Service Announcement for Release of DiagnosticLink 8.12 Service Pack 2. On Thursday, September 3, 2020, Service Pack (SP) 2 for DiagnosticLink 8.12 Standard and Professional will be made available to download from the Detroit Diesel server.

Every Western Star 6900 model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.