# Service bulletin SS1034686

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: 10173647
- Published by NHTSA: 2020\-04\-09
- Manufacturer's number: SS1034686
- Manufacturer's date: 2020\-04\-08
- NHTSA component: ENGINE AND ENGINE COOLING; POWER TRAIN

## NHTSA's summary

Service Solution for P4 New Cascadia with Manual Transmissions Does Not Use Bottom Of Clutch Switch For Starting. On the prior P3 Legacy Cascadia vehicles with manual transmission, the Bottom of Clutch \(BOC\) switch could be uses as an interlock for the engine crank circuit. If programmed in the SAM Cab, the engine crank circuit would require the clutch to be fully depressed in order for the engine to crank. P3 also offered a neutral switch as an interlock that could be used instead of the BOC and would require the transmission to be neutral in order for the engine to crank. P4 New Cascadia only offers the neutral switch as the interlock for engine crank.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173647-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173647-9999.pdf)

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

## Components

Engine, Transmission and driveline

## Vehicles listed

- 2017 to 2021 FREIGHTLINER CASCADIA

## Recalls for the same vehicles and component

- [2021174](/recalls/tc/2021174.md), 2021-03-24: Powertrain
- [21V209000](/recalls/nhtsa/21V209000.md), 2021-03-24: POWER TRAIN:CLUTCH ASSEMBLY
- [21V073000](/recalls/nhtsa/21V073000.md), 2021-02-12: ENGINE
- [20V742000](/recalls/nhtsa/20V742000.md), 2020-11-30: POWER TRAIN:CLUTCH ASSEMBLY
- [2020488](/recalls/tc/2020488.md), 2020-10-16: Powertrain
- [20V642000](/recalls/nhtsa/20V642000.md), 2020-10-16: POWER TRAIN:CLUTCH ASSEMBLY
- [19V137000](/recalls/nhtsa/19V137000.md), 2019-02-27: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)
- [2018714](/recalls/tc/2018714.md), 2018-12-19: Powertrain
- [18V903000](/recalls/nhtsa/18V903000.md), 2018-12-19: POWER TRAIN:CLUTCH ASSEMBLY
- [18V581000](/recalls/nhtsa/18V581000.md), 2018-08-30: ENGINE AND ENGINE COOLING:ENGINE:DIESEL

## Other bulletins for the same vehicles and component

- [TSB\-42\-080\-FTL](/bulletins/11035527.md), 2026-08-03, Service bulletin: POWER TRAIN. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Updated frequently asked questions.
- [TSB\-26\-057\-FTL](/bulletins/11033103.md), 2026-06-01, Service bulletin: POWER TRAIN. Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
- [ICI26\-006](/bulletins/11031973.md), 2026-05-02, Other: POWER TRAIN. Important Campaign Information for SF706 \- Revised, Reactivated
- [SF706\-DLR LTR](/bulletins/11031972.md), 2026-05-02, Service bulletin: POWER TRAIN. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)
- [SF706\-Bulletin](/bulletins/11031971.md), 2026-05-02, Service bulletin: POWER TRAIN. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)
- [ICI26\-003](/bulletins/11030493.md), 2026-04-02, Other: POWER TRAIN. Important Campaign Information letter for SF706 \- campaign suspended
- [FleetCom\_SF706](/bulletins/11029522.md), 2026-03-04, Other: POWER TRAIN. Fleet Communications for SF706 \- Cascadia axle conversion
- [SF706\-OWN LTR](/bulletins/11029516.md), 2026-03-04, Service campaign: POWER TRAIN. Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)
- [SF706\-DLR LTR](/bulletins/11029515.md), 2026-03-04, Service campaign: POWER TRAIN. Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)
- [SF706\-Bulletin](/bulletins/11029509.md), 2026-03-04, Service campaign: POWER TRAIN. Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)

JSON: [/v1/bulletins/10173647](/v1/bulletins/10173647)

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