# Service bulletin sb4937

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: 10141922
- Published by NHTSA: 2018\-06\-18
- Manufacturer's number: sb4937
- Manufacturer's date: 2015\-03\-01
- NHTSA component: ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

sb4937 2013 OBD GHG14, 6\-Gallon DEF Header Suction Line

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10141922-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10141922-0001.pdf)

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

## Components

Engine, Equipment and accessories

## Vehicles listed

- 2013 to 2015 FREIGHTLINER 108SD
- 2013 to 2015 FREIGHTLINER 114SD
- 2013 to 2015 FREIGHTLINER BUSINESS CLASS M2

## Recalls for the same vehicles and component

- [2015336](/recalls/tc/2015336.md), 2015-07-24: Engine
- [15V343000](/recalls/nhtsa/15V343000.md), 2015-06-03: ENGINE AND ENGINE COOLING:ENGINE
- [2014050](/recalls/tc/2014050.md), 2014-02-21: Engine
- [14V080000](/recalls/nhtsa/14V080000.md), 2014-02-21: ENGINE AND ENGINE COOLING:ENGINE
- [13V074000](/recalls/nhtsa/13V074000.md), 2013-03-04: EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM
- [12V074000](/recalls/nhtsa/12V074000.md), 2012-02-28: ENGINE AND ENGINE COOLING:ENGINE:DIESEL

## Other bulletins for the same vehicles and component

- [CXA 3\_25\_NOx](/bulletins/11016309.md), 2025-04-02, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 2\_25\_Turbo Oil Drain](/bulletins/11014819.md), 2025-03-04, Other: ENGINE. CX Advocate for turbo oil drain cracking
- [CXA 2\_25\_NOx](/bulletins/11014818.md), 2025-03-04, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 1\_16\_Turbo Oil Drain](/bulletins/11013206.md), 2025-01-29, Other: ENGINE. CX Advocate for turbo oil drain cracking
- [CXA 1\_16\_NOx](/bulletins/11013204.md), 2025-01-29, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 1\_16\_DD13 Altitude](/bulletins/11013199.md), 2025-01-29, Other: ENGINE. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
- [CXA 7\_24\_Oil Suction](/bulletins/11005504.md), 2024-08-02, Other: ENGINE. CX Advocate for Oil Suction manifolds
- [CXA 7\_24\_NOx](/bulletins/11005500.md), 2024-08-02, Other: ENGINE. CX Advocate for NOx conversion low faults. Update to CXA 6\_24\_NOx submission.
- [CXA 06\_24\_NOx](/bulletins/11003889.md), 2024-07-09, Other: ENGINE. CX Advocate communication for NOx conversion low faults
- [SB49\-042](/bulletins/10208389.md), 2022-03-03, Service bulletin: ENGINE AND ENGINE COOLING. Freightliner Service Bulletin for DEF Connector Reinforcement Caps.

JSON: [/v1/bulletins/10141922](/v1/bulletins/10141922)

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