Service bulletin N192266750-02
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 | 10172664 |
| Published by NHTSA | 2020-03-23 |
| Manufacturer's number | N192266750-02 |
| Manufacturer's date | 2020-02-14 |
| NHTSA component | FUEL SYSTEM, DIESEL; EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; ELECTRICAL SYSTEM |
NHTSA's summary
Service Update - On 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 exhaust 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 and perform NOx and Catalyst Resets and Regen Enable.
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
Electrical system, Engine, Equipment and accessories, Fuel system, Cooling fan, Cooling system
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 3500 | 2020 (the catalog's model; the bulletin names a series or trim of it) |
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