Service bulletin N192266750
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 | 10167472 |
| Published by NHTSA | 2019-11-12 |
| Manufacturer's number | N192266750 |
| Manufacturer's date | 2019-10-01 |
| NHTSA component | ENGINE AND ENGINE COOLING |
NHTSA's summary
N192266750 - Service Update. On certain vehicles that are equipped with a 6.6L diesel engine, may have one or more of the following conditions exist: 1.The instrument panel cluster may incorrectly display the message ?DEF Low? when a diesel engine fluid (DEF) controller internal fault is detected (DTC P20FF), instead of displaying the proper ?Service DEF System? message. 2.The customer may complain of excessive engine fan noise at a low vehicle speed. 3.Under certain conditions, the diagnostic system may set one of the following DTC?s when there is no problem with a component: (P20EE, P226D, P16F3 and P129F). Dealers are to reprogram the engine control module.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine
Trouble codes named
P129F, P16F3, P20EE, P20FF, P226D
| CHEVROLET SILVERADO 4500 | 2020 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| GMC SIERRA 2500 | 2020 (the catalog's model; the bulletin names a series or trim of it) |
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