Diagnostic Trouble Code P2261 Set (20-K-003)
Publication date: 2020-03-26Reference number: 20-K-003
DIAGNOSTIC TROUBLE CODE P2261 SET
TECHNICAL SERVICE BULLETIN
SERVICE INFORMATION
| Brand: | Model: | Model Year: | VIN: | Engine: | Transmission: | ||
|---|---|---|---|---|---|---|---|
| from | to | from | to | ||||
| Buick | Encore GX (VIN M) | 2020 | 2020 | LIH | |||
| Chevrolet | Trailblazer (VIN M) | 2021 | 2021 | LIH | |||
| Involved Region or Country | North America |
| Additional Options (RPOs) | Equipped with 1.2L Turbo Engine (RPO LIH) |
| Condition | Some customers may comment that the Service Engine Soon (SES) lamp is illuminated.
|
| Cause | The cause of the condition may be software anomalies. Breakpoint date of the improved calibration is 23 January 2020. |
| Correction | Reprogram the K20 Engine Control Module with the latest calibration files.
IMPORTANT:
Please do not replace the turbocharger bypass solenoid valve before the ECM reprogramming with the latest calibration. |
SERVICE PROCEDURE
Refer to Engine Control Module Reprogramming with SPS in SI.
Before downloading the update files, be sure the computer is connected to the internet through a network cable (hardwired). DO NOT DOWNLOAD or install the files wirelessly. If there is an interruption during programming, programming failure or control module damage may occur.
Carefully read and follow the instructions below.
- Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or control module damage may occur.
- Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to www.gmdesolutions.com for further information. If not available, connect a fully charged 12V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger.
- Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc.
- Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.
If the Same Calibration/Software Warning is noted on the SPS screen, select OK and follow screen instructions. After a successful programming event, the WCC is located in the Service Programming System dialogue box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the bulletin.
- Reprogram the ECM. Refer to Engine Control Module Reprogramming with SPS
in SI. Modify as required (e.g., select x module from the controller screen. Then provide step-by-step instructions or refer to SI procedure.IMPORTANT:
To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the SPS Warranty Claim Code (WCC) screen on the job card. Refer to callout 1 above for the location of the WCC on the SPS screen.
- Record SPS Warranty Claim Code on the job card for warranty transaction submission.
PARTS INFORMATION
No parts are required for this repair.
WARRANTY INFORMATION
| Labor Operation | Description | Labor Time |
|---|---|---|
| 2810075 | Engine Control Module Reprogramming with SPS | Use the Published Labor Operations Time |
Warranty Claim Code Information Retrieval
If the SPS Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS system as follows:
- Open TIS on the computer used to program the vehicle.
- Select and start SPS.
- Select Settings.
- Select the Warranty Claim Code tab.
The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events.
If the code is retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code field.
SERVICE INFORMATION
| Version | 1 |
| Modified | Released March 26, 2020 |