Service bulletin 21NA077
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 | 10192041 |
| Published by NHTSA | 2021-05-10 |
| Manufacturer's number | 21NA077 |
| Manufacturer's date | 2021-03-26 |
| NHTSA component | EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; UNKNOWN OR OTHER |
NHTSA's summary
This informational bulletin provides information for dealers/technicians on Aero Shutter Related Diagnostic Codes.
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
Equipment and accessories, Labels and manuals
| CHEVROLET SILVERADO 1500 | 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| CHEVROLET SILVERADO 2500 | 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2019, 2020, 2021 |
| CHEVROLET TAHOE | 2019, 2020, 2021 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2022160 | 2022-03-31. Accessories |
|---|---|
| 21V496000 | 2021-07-01. EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER |
| 2020165 | 2020-04-16. Accessories |
| 2019494 | 2019-10-03. Accessories |
| 2019205 | 2019-04-26. Accessories |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| 23-NA-064 | 2024-05-02. Service bulletin. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships. |
|---|---|
| 21-NA-155 | 2024-04-23. Service bulletin. This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector. |
| 20-NA-132 | 2024-04-23. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements. |
| 17-NA-052 | 2024-04-23. Service bulletin. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed. |
| PIT6138 | 2024-04-15. Service bulletin. This Preliminary information communicates and issue with the LED right above the wireless charging pad being inoperative and how to resolve the concern with the LED. |
| PIC6486E | 2024-04-15. Service bulletin. This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution. |
| PIT5784C | 2024-04-15. Service bulletin. This Preliminary information communicates and issue with customers misunderstanding weather they need to bluetooth pair the factory provided headphones. |
| PIT5832L | 2024-04-15. Service bulletin. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly. |
| PIT5448J | 2024-04-15. Service bulletin. This Preliminary Information communication advises the technician with a tip when the vehicle stops running after it has been idling for 2.5 hours. This is normal operation of the vehicle built with regular production code BTM and without Regular Production Option Code AVF. If the vehicle was built with regular production code BTM and AVF only has a 1 hour idle time. |
| 24-NA-062 | 2024-04-10. Service bulletin. This technical bulletin provides repair information to correct a customer concern of the E88 Front Floor Console Bin Lamp Inoperative. |