# Service bulletin 15TL21

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: 10126805
- Published by NHTSA: 2018\-01\-05
- Manufacturer's number: 15TL21
- Manufacturer's date: 2015\-09\-18
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

15TL21 GHG17 Diagnostic Connector Update

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10126805-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10126805-0001.pdf)

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

## Components

Electrical system, Software

## Vehicles listed

- 2007 to 2018 FREIGHTLINER 114SD
- 2007 to 2018 FREIGHTLINER 122SD
- 2017 FREIGHTLINER BUSINESS CLASS M2
- 2016 FREIGHTLINER CASCADIA
- 2002 to 2018 WESTERN STAR 4700
- 2002 to 2018 WESTERN STAR 4900
- 2002 to 2018 WESTERN STAR 5700
- 2002 to 2018 WESTERN STAR 6900

## Recalls for the same vehicles and component

- [17V043000](/recalls/nhtsa/17V043000.md), 2017-01-19: ELECTRICAL SYSTEM:SOFTWARE

## Other bulletins for the same vehicles and component

- [SF533](/bulletins/10189109.md), 2021-03-15, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. SF533 Instrument Cluster Update
- [17TS\-05REV2](/bulletins/10181368.md), 2020-10-21, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. Revised Technical Service Letter for Detroit DT12 TCM GHG17 Only; Bootloader Update. On Detroit DT12 equipped vehicles, it may be necessary to complete an additional step in the programming process when updating the TCM software.
- [D20M1](/bulletins/10174068.md), 2020-04-24, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. Updated DDC Field Service Campaign for GHG14 DETROIT DD13 with Two\-Box Aftertreatment Software Reprogramming. Certain Detroit Model Year 2013 to 2015 GHG14 DD13 engines that are registered in California will require reprogramming to a minimum of the MCM software version and fuel map version listed below: MCM Software Version 4.7.0.0 ZGS 005. Certain sections have been updated for clarity.
- [SB54\-239](/bulletins/10168040.md), 2019-11-20, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; ELECTRICAL SYSTEM. Service Bulletin for Cascadia Cabin CAN ECU Compatibility. Compatible software levels are required for the proper operation of the vehicle.
- [D19R2](/bulletins/10165541.md), 2019-10-01, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. DDC Emission Recall for GHG17 MDEG Platform DD8“ Software Reprogramming For California Inspection and Maintenance
- [ICI19\-016 SF560](/bulletins/10161109.md), 2019-06-10, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Revised Bulletin
- [sb54308](/bulletins/10160779.md), 2019-06-03, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. sb54308 Chassis ECU Programming
- [aeoD18M2](/bulletins/10158133.md), 2019-04-08, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:LABELS. Field Service Campaign D18M2 GHG17 GHG17 Detroit DD13® Software Reprogramming and Emission Label Replacement for Motor Coach Industries, Inc. \(MCI®\)
- [D18M2](/bulletins/10158124.md), 2019-04-08, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:LABELS. Field Service Campaign\-D18M2 \- REVISION 1 GHG17 Detroit DD13® Software Reprogramming and Emission Label Replacement for Motor Coach Industries, Inc. \(MCI®\)
- [18CSA9](/bulletins/10151473.md), 2018-12-10, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. 18CSA9 Release of DiagnosticLink® 8.08

JSON: [/v1/bulletins/10126805](/v1/bulletins/10126805)

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