Service bulletin 20NA038
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 | 10194084 |
| Published by NHTSA | 2021-05-24 |
| Manufacturer's number | 20NA038 |
| Manufacturer's date | 2021-04-08 |
| NHTSA component | EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL |
NHTSA's summary
This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.
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
| CADILLAC CT6 | 2016, 2017, 2018, 2019, 2020 |
|---|---|
| CADILLAC CTS | 2016, 2017, 2018, 2019 |
| CADILLAC ESCALADE | 2015, 2016, 2017, 2018, 2019, 2020 |
| CADILLAC ESCALADE ESV | 2015, 2016 (the catalog's model; the bulletin names a series or trim of it) |
| CADILLAC ESCALADE ESV | 2017, 2018, 2019, 2020, 2021 |
| CADILLAC ESCALADE NA | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET 3500 | 2020 |
| CHEVROLET CAMARO | 2016, 2017, 2018, 2019, 2020, 2021 |
| CHEVROLET CORVETTE | 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| CHEVROLET EXPRESS | 2018, 2019, 2020, 2021 |
| CHEVROLET SILVERADO 1500 | 2014 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2015, 2016, 2017, 2018 (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 | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| CHEVROLET TAHOE | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| GMC SAVANA | 2018, 2019, 2020, 2021 |
| GMC SIERRA 1500 | 2014 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA DENALI | 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| GMC YUKON XL | 2015, 2016, 2017, 2018, 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 |
| 19V428000 | 2019-06-11. EQUIPMENT |
| 2019205 | 2019-04-26. Accessories |
| 18V267000 | 2018-04-26. EQUIPMENT |
| 13V544000 | 2015-10-30. EQUIPMENT:OTHER:LABELS |
| 14V345000 | 2014-06-18. EQUIPMENT; VEHICLE SPEED CONTROL:ACCELERATOR PEDAL |
| 2014216 | 2014-06-06. Accessories |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| PI0572B | 2024-05-06. Service bulletin. Information on COAX Repair Kit Availability. |
|---|---|
| 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-249 | 2024-05-01. Service bulletin. This service bulletin provides repair information to correct a customer concern of the carpet appearance near the center console area. |
| PI0688F | 2024-04-29. Service bulletin. Poor Voice Quality During Bluetooth Call or OnStar® Personal Call. |
| 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. |
| PIP5972 | 2024-04-15. Service bulletin. This Preliminary information communicates the possibility of misboxed/mislabled service parts. |
| 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. |