Duaparts Blog

Beside buying parts, we are helping the trucking industry with the latest information about new technologies, trends and a ton of repair manuals

Freightliner DEF Pump Wiring for Cummins CM2450 Engine Controller

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Applicable Vehicles M2, M2 Plus, and New Cascadia vehicles with a Cummins diesel engine (B6.7, L9, X12, X15) that is equipped with the Cummins CM2450 engine controller. Symptoms Issues with regeneration of the aftertreatment system, coupled with either of the following Cummins engine controller fault codes: Code 3558 (Aftertreatment 1 DEF Dosing Unit-Voltage Above Normal or Shorted To High S read more

Freightliner M2 trucks, SPN 879 or 881 FMI 6 Fault Codes

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Applicable Vehicles All, 2015 to 2018, Freightliner M2 trucks. Symptoms SPN 879 or 881 FMI 6 Active Fault Codes. Issue SPN 879 FMI 6 Fault Code in Service Literature described as Front Left Turn Lamp – Current above expected value, and is associated with CHM C3-N pin. There is another pin, CHM C1-N on Chassis Module, that is progra read more
2023 Freightliner Cascadia Front HVAC Controller - Diagnostic Information Updates

2023 Freightliner Cascadia Front HVAC Controller - Diagnostic Information Updates

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Applicable Vehicles All Cascadia (P3) daycab and sleeper cab Symptoms N/A Issue There is a severe supply constraint on the main HVAC controller, A22-60645-101. An electronic component is no longer available to manufacture the main HVAC controller. Part supplies are extremely limited, and there are no alternative parts. As information is gathered to identify reasons that the HVAC controller i read more
All Freightliner and Western Star vehicles, reverse light switch may not function when the vehicle is shifted into reverse

All Freightliner and Western Star vehicles, reverse light switch may not function when the vehicle is shifted into reverse

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Applicable Vehicles: All Freightliner and  Western Star vehicles that use the backup light switch P/N POL 21 465, POL 21 465P, POL 21 566 or POL 21 566PF  (typically manual transmissions) built up to March of 2019 can be affected.  Symptoms: Backup lights and if equipped with a backup alarm, may not function when the vehicle is shifted into reverse. Issue: The ba read more
Freightliner M2 led headlamps water ingress

Freightliner M2 led headlamps water ingress

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Applicable Vehicles M2 106-112  with LED Headlamps Symptoms LED Headlamp Failures caused by water / moisture ingress Issue Most of the LED Headlamp failures are due to water/moisture ingress. The root cause was identified during inspection and testing of returned failed parts. The connector seal of the Turn - Parking Lamp part of the HARN-LT TRN,OL,CHAS was not installed at the productio read more
Freightliner with Cummins B6.7 GHG24 engines - shutdown for low oil pressure

Freightliner with Cummins B6.7 GHG24 engines - shutdown for low oil pressure

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Applicable Vehicles M2 platform vehicles built after January 3, 2024 with a Cummins B6.7 engine certified to GHG24 requirements (Cummins B6.7 CM2450 B155B engines). These engines use an oil pressure sensor, instead of an oil pressure switch. This solution does not apply to any other Cummins engines. NOTE: As of March 6, 2024, Cummins has provided a "clean date" for each engine ma read more
New Freightliner Cascadia customers complaining about low power, here is the solution

New Freightliner Cascadia customers complaining about low power, here is the solution

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Applicable VehiclesThis solution applies to New Cascadia vehicles built with added floor insulation typically found in data code 772-037 : BLACK MATS WITH ADDED FLOOR HEAT ANDNOISE INSULATION WITH ACCELERATOR RUB PAD.  This solution could also apply to vehicles that receive aftermarket floor mats that eliminate the clearance between the throttle pedal and the floor. Note: Vehicles r read more
Buying a New vs. Used Freightliner Cascadia: A Comprehensive Guide

Buying a New vs. Used Freightliner Cascadia: A Comprehensive Guide

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The Freightliner Cascadia is one of the most popular and trusted models in the commercial trucking industry, known for its exceptional performance, advanced features, and reliability. Whether you're a fleet operator or an independent owner-operator, deciding between purchasing a new or used Freightliner Cascadia can be a significant decision. Each option has its own set of advantages and considera read more