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Service bulletin SS1034797-2021

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 id10194489
Published by NHTSA2021-05-27
Manufacturer's numberSS1034797-2021
Manufacturer's date2021-05-07
NHTSA componentEQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING

NHTSA's summary

Service Solution for M2,108SD, 114SD Coolant Level Sensor P/N 06-93316-002. The Call Center has received several calls pertaining to this LCL sensor introduced to in 2018. The purpose of this solution is to bring better awareness to the sensor functions, fault codes generated, along with providing testing procedures used to validate the sensors condition. Additional information has been added.

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 108SD2019, 2020, 2021
FREIGHTLINER 114SD2019, 2020, 2021
FREIGHTLINER BUSINESS CLASS M22019 to 2021

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

Recalls for the same vehicles and component
20V6340002020-10-14. EQUIPMENT:OTHER:LABELS; TIRES
20204082020-09-01. Engine
20V5270002020-09-01. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING
20V2110002020-04-10. EQUIPMENT:OTHER:LABELS

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
FleetCom_Heater Core2026-01-08. Other. Fleet Communications for Heater Core Plugging
CXA_10_25_Conmet Oil Pan2025-11-05. Other. CX Advocate for ConMet Oil Pan Insert Additional Issues
CXA 3_25_NOx2025-04-02. Other. CX Advocate for NOx conversion low faults
CXA 2_25_Turbo Oil Drain2025-03-04. Other. CX Advocate for turbo oil drain cracking
CXA 2_25_NOx2025-03-04. Other. CX Advocate for NOx conversion low faults
CXA 1_16_Turbo Oil Drain2025-01-29. Other. CX Advocate for turbo oil drain cracking
CXA 1_16_NOx2025-01-29. Other. CX Advocate for NOx conversion low faults
CXA 1_16_DD13 Altitude2025-01-29. Other. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
CXA 1_16_CARB Truck Chec2025-01-29. Other. CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
D24R2-OWN LTR2025-01-06. Emissions. Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming