Service bulletin 21NA128
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 | 10199282 |
| Published by NHTSA | 2021-07-19 |
| Manufacturer's number | 21NA128 |
| Manufacturer's date | 2021-05-28 |
| NHTSA component | ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM) |
NHTSA's summary
This technical bulletin provides repair information to correct a customer concern of MIL Illuminated- ECM Update for P026C, P20EE, or P11D5.
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, Hybrid and electric drive, High-voltage battery
Trouble codes named
P026C, P11D5, P20EE
| CHEVROLET SILVERADO 2500 | 2021 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| GMC SIERRA 2500 | 2021 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| PIT5676B | 2022-02-14. Service bulletin. This Preliminary information communication provides information to the technician on installing Regular Production Option Code 9L7 Up-fitter Auxiliary Switches. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 148. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins." |
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