Impala V8-5.3L (2008)
Technical Service Bulletin # 08266
Date: 080812
Campaign - A/C Control Module Reprogramming
# 08266: Customer Satisfaction - Reduced Heating and Cooling-Reprogram Module - (Aug 12, 2008)
Subject:
08266 -- Reduced Heating and Cooling - Reprogram - Module - (Aug 12, 2008)
Models:
2008 Chevrolet Impala
With Dual Zone Manual Climate Control (RPO CJ3)
THIS PROGRAM IS IN EFFECT UNTIL AUGUST 31, 2009.
Condition
Certain 2008 model year Chevrolet Impala vehicles equipped with dual zone manual climate control (RPO CJ3) may have software that does not allow
the heating and air conditioning system to deliver maximum cold or maximum hot output. If this occurs, the vehicle may not warm or cool as intended.
Correction
Dealers are to reprogram the HVAC control head module.
Vehicles Involved
Involved are certain 2008 model year Chevrolet Impala vehicles equipped with dual zone manual climate control (RPO CJ3) and built within the VIN
breakpoints shown above.
Important:
Dealers are to confirm vehicle eligibility prior to beginning repairs by using the GM Vehicle Inquiry System (GMVIS). Not all vehicles within the
above breakpoints may be involved.
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 through the applicable system listed below. Dealers will not have a report available if they have no
involved vehicles currently assigned.
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US dealers - GM DealerWorld Recall Information
-
Canadian dealers - GMinfoNet Recall Reports
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 program 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 program.
Parts Information
No parts are required for the program.
Service Procedure
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 Multiple Diagnostic Interface (MDI) or Tech 2(R) scan tool and TIS2WEB with the calibration update. Use TIS2WEB on
or after 07/30/08 to obtain the calibration. If you cannot access the calibration, call the Techline Customer Support Center and it will be provided.
Service Programming System (SPS)
For step-by-step programming instructions, please refer to SI and the Techline Information System (TIS) terminal.
Review the information below to ensure proper programming protocol.
