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Service bulletin TechTalk6479

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10180356
Published by NHTSA2020-09-30
Manufacturer's numberTechTalk6479
Manufacturer's date2020-09-06
NHTSA componentENGINE AND ENGINE COOLING; EQUIPMENT

NHTSA's summary

Tech Talk discussion on Cascadia DD15 fault code SPN 3597 FMI 4 and SPN 3463 FMI 16.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Equipment and accessories

Vehicles listed
FREIGHTLINER CASCADIA2014

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
17V8100002017-12-15. EQUIPMENT
15V8160002015-12-07. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
14V6800002014-10-29. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
14V5880002014-09-23. EQUIPMENT:ELECTRICAL
14V0800002014-02-21. ENGINE AND ENGINE COOLING:ENGINE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
ICI24-0312024-09-07. Other. Important Campaign Information letter for DDC D23M3 - Campaign Reactivated and Extended. Field Service Campaign D23M3 - GHG17 DETROITTM DD16® Vibration Damper Replacement has been extended for an additional 6 months.
SB83-1372022-04-01. Service bulletin. Revised Freightliner Service Bulletin for ParkSmart Eberspaecher Auxiliary Heater Service. This bulletin replaces the version dated May 2015. The note in General Information has been revised to include New Cascadia. Espar information has been changed to reflect a company name change to Eberspaecher.
SB49-0422022-03-03. Service bulletin. Freightliner Service Bulletin for DEF Connector Reinforcement Caps.
TechTalk80482021-06-02. Service bulletin. Tech Talk continued discussion on Trailer ABS light on even when truck off.
FAB1532021-05-18. Service bulletin. Freightliner Action Bulletin FAB153 New Harness Highway for Cascadia
TSN 01-07c2021-05-13. Service bulletin. Beyond routing and wiring concerns, the PCC system as previously implemented suffers from two timing / reporting issues. One stems from the long boot-up time of the PCC module as compared to the CPC (a.k.a. the 6N4C timer issue), and the other stems from the potential of some PCC modules to lock-up (a.k.a. the NAND flash issue). The timer concern is considered to primarily affect EPA10 units (OBD13 already had a longer timer) and most can be resolved by simply refreshing the CPC software (even if an update is not available). The module lock-up software solution is currently being validated, so the PDC stock is not clean yet. However, lock-up is anticipated to only be present in approximately 8% of PCC modules (based on testing), so (ahead of a campaign), here are instructions on how to reactivate a system, verify proper operation, and drive service actions.
TechTalk81212021-05-06. Service bulletin. Tech Talk continuing discussion on ABS 11 SPN 807.
D21R12021-05-04. Service bulletin. Detroit Emission Recall for GHG14 DETROIT DD13 with Two-Box Aftertreatment Software Reprogramming. Certain Detroit Model Year 2013 to 2015 GHG14 DD13 engines that are registered in the state of California will require reprogramming to a minimum of the MCM and ACM software versions.
16TS-08REV2021-04-24. Service bulletin. Detroit Technical Service Letter for DD13 Cylinder Head and Cylinder Head Gasket Change.
WI21-0092021-04-24. Service bulletin. Warranty 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.