# Service bulletin CALFTL01\-004b

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.

- Type: Service bulletin
- NHTSA id: 10232342
- Published by NHTSA: 2023\-03\-04
- Manufacturer's number: CALFTL01\-004b
- Manufacturer's date: 2023\-02\-24
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Revised Customer Advisory Letter for New Cascadia Vehicles Equipped with Cummins Engines \- Inspection for Properly Torqued Engine Mounting Bolts

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10232342-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10232342-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2023 FREIGHTLINER CASCADIA

## Recalls for the same vehicles and component

- [2022413](/recalls/tc/2022413.md), 2022-07-29: Engine
- [22V554000](/recalls/nhtsa/22V554000.md), 2022-07-29: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\)

## Other bulletins for the same vehicles and component

- [CXA 03\_26\_Surge Tank](/bulletins/11030507.md), 2026-04-02, Other: ENGINE. CX Advocate for discolored coolant surge tanks \(24CSA\-20\)
- [FleetCom\_Heater Core](/bulletins/11027493.md), 2026-01-08, Other: ENGINE. Fleet Communications for Heater Core Plugging
- [TSB54\-377\-FTL](/bulletins/11027199.md), 2026-01-07, Service bulletin: ENGINE. Technical Service Bulletin Low Coolant Sensor
- [FleetCom\_SS 3163\-FTL](/bulletins/11026453.md), 2025-12-06, Other: ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
- [FleetCom\_Low Coolant](/bulletins/11026421.md), 2025-12-05, Other: ENGINE. Fleet Communications for Low Coolant Sensor
- [CXA 10\_25\_Discolored Cool](/bulletins/11025095.md), 2025-11-06, Other: ENGINE. CX Advocate for Plastic Opaque Surge Tank Staining
- [CXA\_10\_25\_Low Coolant](/bulletins/11024962.md), 2025-11-05, Other: ENGINE. CX Advocate for P4, WST X\-Series, DD Engines Low/Critical Low Coolant Warnings
- [CXA\_10\_25\_Conmet Oil Pan](/bulletins/11024958.md), 2025-11-05, Other: ENGINE. CX Advocate for ConMet Oil Pan Insert Additional Issues
- [CXA\_9\_25\_Tech Questions](/bulletins/11023683.md), 2025-10-03, Other: POWER TRAIN; ENGINE. CX Advocate for technical questions/issues raised
- [CXA\_8\_25\_Tech Questions](/bulletins/11022341.md), 2025-09-02, Other: POWER TRAIN; ENGINE; UNKNOWN OR OTHER. CX Advocate for technical questions/issues raised

JSON: [/v1/bulletins/10232342](/v1/bulletins/10232342)

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