2021 Freightliner Business Class M2 technical service bulletins
200 technical service bulletins and manufacturer communications cover the 2021 Freightliner Business Class M2, including one warranty extension.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair...
- Technical Service Bulletin for Grote OEM and Alliance Aftermarket Headlamp Replacement
- Service Solution for A22-82459-000 Wiper Motor Wiring Connector Pinned Wrong (305)
- Service Solution for Legacy M2 Bulkhead Module (BHM) Replacement and DiagnosticLink Issues
- Fleet Communications for solenoid issues
- CX Advocate for 1810/02 ABS longitudinal acceleration fault (TSB-54-104-WST,TSB-54-379-FTL)
- Fleet Communications for TSB-54-379-FTL & TSB-54-104-WST ESC warning lamp and ECU replacement
- My Communications for update on UFU R61709 Fuel Filters
- Revised Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
- Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
- CX Advocate for Aftermarket Transmission Support
- Fleet Communications for Heater Core Plugging
- Fleet Communications for NFD Lower Oil Plug Location
- Revised Field Service Campaign for Beverage Body Frame Rail 50 KSI
- My Communications for Update to DTNA parts on UFU R61709
- CX Advocate for ConMet Oil Pan Insert Additional Issues
- CX Advocate for Experiencing Excessive Purging from Air Dryer
- My Communications for UFI 0-Ring Announcement
- My Communications for UPDATE TO DTNA PARTS QUALITY ALERT STOCK HOLD on UFU R61709
- My Communications for Parts Hold on UFU Filter
- Technical Service Bulletin for New Grill Design
- Parts Bulletin for Tie Rod Assembly Part Breakdown
- Service Solution for Legacy M2 Bulkhead Module (BHM) Replacement and Diagnosticlink Issue
- CX Advocate for NOx conversion low faults
- CX Advocate for SAS01T to SAS03T replacement (TSB54-373-FTL, TSB54-097-WST)
- CX Advocate for turbo oil drain cracking
- Revised Service Solution for M2 Plus Fault Code 232/524000/19- ECU CPC data error
- Technical Service Bulletin for SAS01T to SAS03T Replacement Information
- CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test...
- CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
- CX Advocate for repairing seat occupancy sensor (TSB 91-016-FTL)
- Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top...
- CX Advocate for M2 and SD Vehicles Transfer Case Failures Due to Excessive Vehicle Speed (SS 3155-FTL)
- Technical Service Bulletin for Repairing Seat Occupancy Sensor for ISRI, SEARS and National Truck Seats
- Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change...
- Service Solution for M2 mirror wind noise
- Parts Bulletin for Powertrain Power Distribution Module (PTPDM) Kit Replacement
- Service Solution for M2 and SD Vehicles Transfer Case Failures Due to Excessive Vehicle Speed
- Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
- CX Advocate for MDEG Updates
- Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change...
- CX Advocate for benefits of Autoelevate and hydrocarbon faults
- CX Advocate for AutoElevate Disablement Gen5 Engines
- CX Advocate for ConMet Oil Pan Insert Additional Failures
- CX Advocate for NOx conversion low faults
- Customer Advisory Letter for Proactive Air Compressor, Resonator, and Suction Line Replacement
- Revised Important Campaign Inofrmation letter for SF671
- Revised Field Service Campaign for Beverage Body Frame Rail 50 KSI. REVISION: 3 new SRTs and repair...
- CX Advocate communication for NOx conversion low faults
- CX Advocate communication for clutch bolts
- Technical Service Bulletin for New Final Drive Over Heat Diagnostic
- Service Solution for Thread Spring Pin Suspension Alignment & Installation
- Field Service Campaign Owner Reminder Postcard small population
- Field Service Campaign Owner Reminder Postcard large population
- Customer letter regarding variable speed water pump.
- My Communications for SSI DEF Header Warranty Policy Extension for B6 7 Engines Model Years 2017-2021
- Extended Warranty Policy for certain Cummins B6.7 engines with SSI DEF headers for EPA and CARB Emissions...
- Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
- Important Campaign Information letter for SF671 Campaign Suspended
- Important Campaign Information letter for SF671
- Revised Field Service Campaign for Beverage Body Frame Rail 50 KSI. REVISION: If you find modifications to...
- Revised Emissions Recall: Cummins DEF Sensor Shortage
- Important Campaign Information letter for FL974
- Important Campaign Information letter for SF669 Campaign Suspended
- Emissions Recall: Cummins DEF Sensor Shortage
- Field Service Campaign for Beverage Body Frame Rail 50 KSI
- Field Service Campaign for Adaptive Cruise Control
- Revised Field Service Campaign for Common Telematics Platform Software Update
- Field Service Campaign for Common Telematics Platform Software Update
- Important Campaign Information letter communicating that SF660 Field Service Campaign is Replaced by FL967.
- Revised Field Service Campaign for Drag Link Tapered Joint
- Field Service Campaign for Drag Link Tapered Joint
- Revised Freightliner Service Bulletin for Replacing an Auto Baud Rate Detecting Bulkhead Module with a...
- Updated Freightliner Service Bulletin for Heater Hose Reduced Clearance May
- Freightliner Service Bulletin for DEF Connector Reinforcement Caps.
- Customer Advisory Letter for M2 Front Steer Arm â Drag Link Ball Joint Connection Inspection
- ConMet Front Hub to Rotor Fasteners
- Service Solution for DD8 Engine Harness Chafing Air Compressor Suction Line.
- Freightliner Service Bulletin for Heater Hose Clearance
- Customer Advisory Letter for 4-Hook Chain Hanger Replacement.
- Freightliner Service Bulletin for Insulated Automatic Transmission Cover Plate
- Freightliner Field Service Campaign for Freightliner M2 DD5 Fan Hub Fasteners
- Service Solution for M2,108SD, 114SD Coolant Level Sensor P/N 06-93316-002
- Customer Advisory Letter for 80KSI Frame Reinforcement Installation on specific Business Class M2 equipped...
- Updated Service Bulletin for upgrading BHM software for switch expansion module fault SPN 698 FMI 7.
- Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times (SDTs) shown
- Freightliner Field Service Campaign for Freightliner Drag Link Cotter Pin. Errors found in the cotter pin...
- Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown
- Tech Talk continuing discussion on MARMON HARRINGTON VPD ELGIN SWEEPER DROP OOUT.
- Tech Talk continuing discussion on M2 SPLICE PACKS IN DASH AND FONTAINE MODULES.
- Tech Talk discussion on M2 splice packs in dash and Fontaine modules.
- Updated Freightliner Service Bulletin for Rerouting Wiring Harness to Reduce Chafing
- Tech Talk discussion on Marmon-Harrington VPD/Elgin sweeper drop out.
- Updated Freightliner Service Bulletin for Espar Service Information
- Warranty Policy Letter for battery tags
- Service Solution for M2 Rear Suspension Knock
- Revised Freightliner Service Bulletin for netized Fill Neck for Six-Gallon DEF Tanks
- Email from DDC Service Engineering regarding a fuel pump replacement on a population of 18 MY2019-2021...
- Freightliner Service Bulletin for Programming Chassis Electronic Control Units (ECUs) With DiagnosticLink.
- Revised Technical Service Letter for Fault Code SPN 2629 FMI 10 on GHG21 936.917 DD8 Dual Stage Turbo with...
- Starting on November 23, 2020, DiagnosticLink 8.13 (Build 4527) was made available
- Warranty Information Letter for Body Builder/Truck Equipment Manufacturer Demonstration Program.
- Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes
- Tech Talk continued discussion on NEW M2 DD8 TURBO OUTLET TEMP SENSOR.
- Revised Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance
- Warranty Information Letter for Detroit Resources: Exploded View DD Platform and DT12 Posters
- Tech Talk discussion on M2 500k issue.
- Tech talk discussion on M2 VIN KN8076 shutting down intermittently.
- Tech Talk discussion on M2 106 ABS Battery Power Issue.
- Customer Advisory Letter for Freightliner M2 Forward-Frame Extension Hood Mount Bracket Gusset Installation.
- Revised Freightliner Service Bulletin for Axle Flange Gasket Replaced with O-Ring
- Tech Talk discussion on M2 DD8 TURBO OUTLET TEMP SENSOR.
- Freightliner Service Bulletin for Access to Front Brake Zerk Fittings
- Revised Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing
- Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing
- Technical Service Letter for Fault Code SPN 2629 FMI 10 on GHG21 936.917 DD8 Dual Stage Turbo with MCM...
- Revised Customer Advisory Letter for Hendrickson Primaax EX 69,000 lb Tri-Axle Rear Air Suspension...
- Tech Talk discussion on 2021 Bulkhead Module Problems.
- TechTalk discussion on M2 low coolant level
- Tech Talk discussion on 2021 M2 CHM fuse.
- Customer Advisory Letter for Updating the RP170 Customer Access Connector and Adding Overlays for J1939
- Updated Freightliner Service Bulletin for Powernet Troubleshooting Guide
- Revised Technical Service Letter for Detroit DT12 TCM GHG17 Only; Bootloader Update
- DDC Technical Service Letter for GHG17 DD Platform Heavy Duty Oil Pan Drain Plug Inserts
- Freightliner Service Bulletin for Axle Flange Gasket Replaced with O-Ring
- Tech Talk discussion on M2 Viscous Fan and A/C Pressure.
- Tech Talk discussion on M-2 gauges inoperative at times due to paint on backside of nut on PNDB.
- Detroit Diesel Special Publication informing about Heavy Duty Friction Style Belt Tensioner Kit. This...
- Revised Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change
- Revised Customer Advisory Letter for Fan Hub Fastener Inspection in Business Class M2 Vehicles with DD5...
- Tech Talk discussion about power steering fluid.
- ConMet Hub Communication on rotor mounting studs installed on steer and drive hubs on vehicles with flat...
- Customer Advisory Letter for Fan Hub Fastener Inspection in Business Class M2 Vehicles with DD5 Engines
- Tech Talk discussion on repair verification for codes like 'low air flow' when a trailer is not available.
- Tech Talk discussion on M-2 gauges inoperative at times.
- Customer Advisory Letter for Inspection of ConMet Disc Brake Rotor to Hub Fastener
- Tech Talk Discussion for M2 mirror shake
- Tech talk discussion on 2021 M2 BHM/CHM issue
- Tech Talk discussion on 500k data link.
- ConMet Work Instructions for Inspection of ConMet Disc Brake Rotor to Hub Fastener
- ConMet Disc Brake Communication for vehicles with flat rotor disc brakes with aluminum hubs may have rotor...
- Customer Service Announcement for Release of DiagnosticLink 8.12 Service Pack 2. On Thursday, September 3,...
- TechTalk forum post where an incorrect part number was fixed to remove confusion among community members
- Important Campaign Information Letter informing that revised bulletins for Detroit Diesel campaigns...
- Engine and engine cooling
- Detroit Emissions Recall for GHG21 Detroit DD13 Model Year 2020 Software Reprogramming
- Customer Advisory Letter for Hendrickson Primaax EX 69,000 lb Tri-Axle Rear Air Suspension Height-Control...
- Revised letter is to announce a reimbursement available to dealers for travel to a customer's location to...
- Important Campaign Information letter announcing that SF605 for LED Step Lighting has been suspended
- Warranty Information Letter informing that to ensure that DTNA policies and service network practices...
- Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance
- Important Campaign Information letter announcing Dealer Travel for Campaign Performance
- Freightliner Service Bulletin for Non-Airliner Rear Suspension Crossmember Fastener Change
- Customer Service Announcement informing that Service Pack (SP) 1 for DiagnosticLinkÃÂÃÂÃÂî 8.12...
- OEM and distributor announcement for DiagnosticLink 8.12 (Build 4527) was made available
- Technical Service Letter for EPA10, GHG14, GHG17 Diesel Particulate Filter (DPF) Compatibility
- Service Bulletin for Front Lighting Ground Splice Pack Failure
- Customer Service Announcement for DiagnosticLink Software Update Reminder
- Service Bulletin for Guidelines for Cleaning and Disinfecting Cab Surfaces
- Freightliner Service Bulletin for Rerouting Wiring Harness to Reduce Chafing
- Field Service Campaign for LED Step Lighting
- Revised Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change
- Warranty Information Letter for a Warranty Service Replacement Engine Program Clarification
- Customer Service Announcement for Release of DiagnosticLink 8.12. On Wednesday, June 10, 2020,...
- Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change
- Warranty Information Letter for Warranty Training Online
- Warranty Policy Letter for Handling for Authorized Service Location Part Transfers
- Warranty Policy Letter for Chassis Progressive Damage Policy Change
- Warranty Policy Letter for Handling Change: Over the Counter Aftermarket Parts Replacement Program
- Warranty Information Letter for Warranty Long Block Program Change
- Customer Advisory Letter for GWR Label Correction
- Freightliner Service Bulletin for Front Axle Spacer Replacement
- Customer Advisory Letter Revision for Airliner 21K Lightweight Extra Duty Rear Suspension Height Control...
- Customer Advisory Letter for Airliner 21K Lightweight Extra Duty Rear Suspension Height Control Valve...
- Service Solution for M2 ABS Wiring Harness Rubs On Forward Cab Mount
- Freightliner Service Bulletin for vibration troubleshooting
- Service Solution SS 1033289 BHM Fault Code SPN 524249 / FMI 7
- Ss 1032728
- Service Solution SS 1033180 BHM Fault Code SPN 524251 FMI 7
- Ss 1032974
- Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform...
- Training Solutions for Fuel Leak Found at High Pressure Fuel Pump Weep Hole for Heavy Duty DD Engines
- Service Solution SS 1032998 M2 mirror wind noise
- Service Solution SS 1032989 – BHM Fault Code Changes
- Rear Brake Calipers and Anchor Plates.
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