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Service bulletin TechTalk566949

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 id10194882
Published by NHTSA2021-06-03
Manufacturer's numberTechTalk566949
Manufacturer's date2021-05-27
NHTSA componentPOWER TRAIN; ENGINE AND ENGINE COOLING

NHTSA's summary

Tech Talk Discussion Gen 5 DD15 Engine noise metal to metal clunk/grunt. Bad Vibration dampener/ balancer

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, Transmission and driveline

Vehicles listed
FREIGHTLINER CASCADIA2022

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

Recalls for the same vehicles and component
21V7150002021-09-15. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
21V0730002021-02-12. 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
MAN 00000728682026-10-05. Other. Detroit Transmissions Manual Update for Symptom Diagnostics — DT12 C/D Box Range Shift to Neutral with Reversing Events (Aborts)
TSB-42-080-FTL2026-08-03. Service bulletin. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Updated frequently asked questions.
TSB-26-057-FTL2026-06-01. Service bulletin. Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
TSB-26-001-DDC2026-05-02. Service bulletin. Revised Technical Service Bulletin for DT12 Range Detent Diagnostic
ICI26-0062026-05-02. Other. Important Campaign Information for SF706 - Revised, Reactivated
SF706-DLR LTR2026-05-02. Service bulletin. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
SF706-Bulletin2026-05-02. Service bulletin. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
TSB-26-001-DDC2026-04-02. Other. Technical Service Bulletin for DT12 Range Detent Diagnostic
CXA 03_26_Surge Tank2026-04-02. Other. CX Advocate for discolored coolant surge tanks (24CSA-20)
ICI26-0032026-04-02. Other. Important Campaign Information letter for SF706 - campaign suspended