Campaign - ECM Update For Rough Idle And Stalling
SERVICE UPDATEBulletin No.: 12225
Date: October 16, 2012
Subject: 12225 Service Update for Inventory and Customer Vehicles Rough Idle and Engine Stalling At First Driving Cycle
Models:
2012 T300 CHEVROLET AVEO/SONIC WITH 1.4L GASOLINE ENGINE (RPO CODE: LDD)
Attention:
This service update includes vehicles in dealer inventory and customer vehicles that return to the dealership for any reason. This bulletin will expire at the end of the involved vehicle's New Vehicle Limited Warranty period.
Purpose
This bulletin provides a service procedure to reprogram the engine control module (ECM) on certain 2012 model year Chevrolet Aveo/Sonic with 1.4L Gasoline Engines (RPO LLD). These vehicles may have an engine idle that is rough and/or stalls immediately after engine start in an outside temperature range 20 ~ 30 Celsius degrees.
This service procedure should be completed as soon as possible on involved vehicles currently in dealer inventory and customer vehicles that return to the dealer for any type of service during the New Vehicle Limited Warranty coverage period.
Vehicles Involved
All involved vehicles are identified by Vehicle Identification Number on the Investigate Vehicle History screen in GM Global Warranty Management system. Dealership service personnel should always check this site to confirm vehicle involvement prior to beginning any required inspections and/or repairs. It is important to routinely use this tool to verify eligibility because not all similar vehicles may be involved regardless of description or option content.
For dealers with involved vehicles, a listing with involved vehicles containing the complete vehicle identification number, customer name, and address information has been prepared and will be provided to US dealers through the GM GlobalConnect Recall Reports, or sent directly to export dealers. Dealers will not have a report available if they have no involved vehicles currently assigned.
The listing may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this recall is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to complete this recall.
Parts Information
No parts are required for this recall.
Service Procedure
Do not attempt to order the calibration number from GM Customer Care and Aftersales. The calibration numbers required for this service procedure are programmed into control modules via a Multiple Diagnostic Interface (MDI) or Tech 2 with the calibration update. When using a MDI or Tech 2 for reprogramming, ensure that it is updated with the latest software version. Use TIS2WEB on or after 08/22/12 to obtain the calibration. If you cannot access the calibration, call the Techline Customer Support Center and it will be provided.
For step-by-step programming instructions, please refer to SI and the Techline Information System (TIS) terminal.
1. Verify that there is a battery charge of 12 to 15 volts. The battery must be able to maintain a charge during programming. Only use an approved Midtronics(R) PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent to maintain proper battery voltage during programming.
2. Reprogram the engine control module (ECM). Refer to SI and Service Programming System (SPS) documentation for programming instructions, if required.
1. Connect the MDI or Tech 2 to the vehicle.
2. Select J2534 MDI or J2534 Tech 2 and Reprogram ECU from the Select Diagnostic Tool and Programming Process screen.
3. Select ECM Engine Control Module from the Supported Controllers screen.
4. Follow the on-screen instructions.
Clear all diagnostic trouble codes (DTCs).
Warranty Transaction Information
Submit a transaction using the table below.
Dealer Program Responsibility
Whenever a vehicle subject to this service update enters your vehicle inventory, or is in your facility for service in the future, and the vehicle is still covered under the New Vehicle Limited Warranty, you must take the steps necessary to be sure the service update correction has been made before selling or releasing the vehicle.
Disclaimer