# Service bulletin TechTalk8061

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: 10186639
- Published by NHTSA: 2021\-02\-03
- Manufacturer's number: TechTalk8061
- Manufacturer's date: 2021\-01\-21
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Tech Talk discussion on GHG14 Regen acting unusual.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186639-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186639-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2015 WESTERN STAR 4900

## 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\_GATS2.4](/bulletins/11013201.md), 2025-01-29, Other: ENGINE. CX Advocate for GATS2.4 being expanding to DD15
- [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.
- [ICI24\-051](/bulletins/11012298.md), 2025-01-03, Other: ENGINE. Important Campaign Information letter for DDC D24R4 \- Campaign Reactivated
- [ICI24\-050](/bulletins/11012297.md), 2025-01-03, Other: ENGINE. Important Campaign Information letter for DDC D24R4 \- Campaign Inactivated
- [D24R4\-OWN LTR](/bulletins/11011115.md), 2024-12-04, Emissions: ENGINE. Detroit Emission recall for GHG14 DETROIT DD16 Software Reprogramming
- [D24R4\-DLR LTR](/bulletins/11011114.md), 2024-12-04, Emissions: ENGINE. Detroit Emission recall for GHG14 DETROIT DD16 Software Reprogramming

JSON: [/v1/bulletins/10186639](/v1/bulletins/10186639)

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