Service Update for Inventory and Customer Vehicles-Manual Air Conditioning Does Not Cool Vehicle-Expires with Base Warranty

THIS SERVICE UPDATE INCLUDES VEHICLES IN DEALER/RETAILER INVENTORY AND CUSTOMER VEHICLES AT THE DEALER/RETAILER FOR ANY TYPE OF SERVICE, AND WILL EXPIRE AT THE END OF THE INVOLVED VEHICLE'S NEW VEHICLE LIMITED WARRANTY PERIOD.

This bulletin provides a service procedure to reprogram the body control module (BCM) on certain 2008 model year Chevrolet Malibu and Saturn Aura vehicles. The BCM in these vehicles may have been programmed with an incorrect calibration, causing the compressor to turn off before the vehicle has reached the desired temperature.

This service procedure should be completed as soon as possible on involved vehicles currently in dealer/retailer inventory and customer vehicles at the dealer/retailer for any type of service during the New Vehicle Limited Warranty coverage period.

A list of involved vehicles currently in dealer/retailer inventory is available on the "Service Update Bulletin Information" link under the "Service" tab in DealerWorld. Customer vehicles at the dealer/retailer for any type of service, for any reason, and are still covered under the vehicle's base warranty, and are within the VIN breakpoints provided below, should be checked for vehicle eligibility in the appropriate system listed below.

Important: Dealers/retailers are to confirm vehicle eligibility prior to beginning repairs by using the system(s) below. Not all vehicles within the above breakpoints may be involved.

No parts are required for this service update.

J2534 Pass-Thru Programming or Tech 2 Legacy Pass-Thru Method for the HVAC System

Important: If Pass-Thru programming fails, call Techline Customer Support Center (TCSC) at 1-800-828-6860 (English) or 1-800-503-3222 (French). A "Candi" module is necessary.

CALIBRATION INFORMATION

Do not attempt to order the calibration number from GMSPO. The calibration numbers required for this service procedure are programmed into control modules via a Techline Tech 2® scan tool and TIS 2 Web with the calibration update. Use TIS2Web version 9.5 for 2007 (available on 09/16/07). If you cannot access the calibration, call the Techline Customer Support Center at 1 800-828-6860 (English) or 1-800-503-3222 (French) and it will be provided.

Notice: Before reprogramming, please check the battery condition to prevent a reprogramming error of any of the modules due to battery discharge. Battery voltage must be between 12 and 16 volts during reprogramming. If the vehicle battery is not fully charged, use approved Midtronics PCS charger, a fully charged 12V jumper, or booster pack disconnected from the AC voltage supply. Be sure to turn off or disable any system that may put a load on the battery, such as automatic headlamps, daytime running lights, interior lights, heating, ventilation, and air conditioning (HVAC) system, radio, engine cooling fan, etc. A programming failure or control module damage may occur if battery voltage guidelines are not observed.

The ignition switch must be in the proper position. The Service Programming System (SPS) application prompts you to turn ON the ignition, with the engine OFF. DO NOT change the position of the ignition switch during the programming procedure, unless instructed to do so.

Make certain all tool connections are secure, including the following components and circuits:

DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or control module damage may occur.

DO NOT turn OFF the ignition if the programming procedure is interrupted or unsuccessful. Ensure that all control module and DLC connections are secure and the TIS terminal operating software is up to date.

1. Verify that there is a battery charge of 12 to 16 volts. The battery must be able to maintain a charge during programming. Only use approved Midtronics PCS charger, a fully charged 12V jumper, or booster pack disconnected from the AC voltage supply to maintain proper battery voltage during programming.

Important: A VCI number is required. Contact the Techline Customer Support Center to obtain a VCI number. Select ECM from the Supported controllers screen to program the HVAC System. Follow TIS 2Web instructions.

2. Reprogram the HVAC system. Refer to SI and Service Programming System (SPS) documentation for IPC programming instructions, if required.

For vehicles repaired under this service update, use:

1. To receive credit, submit a claim with the information below: