21NA080
Service Bulletin Details
Public Details for: 21NA080
This service bulletin provides repair information to correct a customer concern of flutter type noise heard when vehicle is operating in afm mode (eco lamp on).
Models from 2021
2021 CADILLAC CT4 |
2021 CADILLAC CT5 |
Models from 2020
2020 CADILLAC CT4 |
2020 CADILLAC CT5 |
Service Bulletin Bulletin No.: 21-NA-080 Date: April, 2021 TECHNICAL Subject: Flutter Type Noise Heard When Vehicle is Operating in AFM Mode (ECO Lamp On) This bulletin replaces PIP5760A. Please discard PIP5760A. Brand: Cadillac Model: CT4 CT5 Model Year: VIN: from to from to 2020 2021 — — Engine: Transmission: 2.0 (LSY) — Involved Region or Country United States, Canada, Middle East, Cadillac Korea, China Condition Some customers may comment on a slight flutter type noise that is most notable while driving on smooth roads and the engine operating in AFM mode (ECO lamp on). Cause The cause of the condition may be noise transmitted through the engine mounts. Correction Reprogram the Engine Control Module. Service Procedure Caution: 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. Note: 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 Copyright 2021 General Motors LLC. All Rights Reserved. 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. • Ensure the ignition is turned OFF. Load on the vehicle’s battery such as; interior lights, exterior lights (including daytime running lights), HVAC, etc. may affect the download process. • Please verify that the radio time and date are set correctly before inserting USB drive into vehicle for programming, otherwise an error will result. • Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/ Maintenance (I/M) system status indicators to NO. Caution: Be sure the VIN selected in the drop down menu (1) is the same as the vehicle connected (2) before beginning programming. Page 2 April, 2021 Bulletin No.: 21-NA-080 5743643 5644477 Bulletin No.: 21-NA-080 April, 2021 Page 3 5431207 Important: Techline Connect and TIS2WEB screens shown above. Important: If the Same Calibration/Software Warning is noted on the TLC or SPS Summary screen, select OK and follow on-screen instructions. The system will generate a warranty claim code (WCC) for documentation purposes only. Perform service information (SI) diagnostics to determine the cause of the condition. Use the applicable labor operation code when submitting a warranty claim. Do NOT use the WCC with the warranty claim submission. Important: When programming a module in GM’s new Vehicle Intelligence Platform, or VIP, the power mode (ignition) needs to be off or errors may occur. This involves the 2020 Chevrolet Corvette, Cadillac CT5 and CT4, as well as the upcoming full-size Chevrolet, GMC, Cadillac SUVs and Buick Envision. Serial Data Message Authentication also needs to have the ignition off. 1. Reprogram the Engine Control Module. Refer to K20 Engine Control Module: Programming and Setup in SI. Page 4 April, 2021 Bulletin No.: 21-NA-080 5644478 5431209 Bulletin No.: 21-NA-080 April, 2021 Page 5 Note: The screenshots above are an example of module programming and may not be indicative of the specific module that is being programmed. Module selection and VIN information have been blacked out. Important: To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the SPS Warranty Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of the WCC on the SPS screen. 2. Record the SPS Warranty Claim Code on the job card for warranty transaction submission. Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time Use Published Engine Control Module Labor 2810075* Reprogramming with SPS Operation Time Important: *To avoid warranty transaction rejections, carefully read and follow the instructions below: • The Warranty Claim Code must be accurately entered in the “SPS Warranty Claim Code” field of the transaction. • When more than one Warranty Claim Code is generated for a programming event, it is required to document all Warranty Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the “SPS Warranty Claim Code” field of the transaction, otherwise the transaction will reject. It is best practice to enter the FINAL code provided by SPS/SPS2. 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: 1. Open TLC/TIS on the computer used to program the vehicle. 2. Select and start SPS/SPS2. 3. Select Settings. 4. 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. Version 1 Modified Released March 26, 2021 GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION