Equinox AWD V6-3.4L (2008)
Seat Heater Control Module: All Technical Service Bulletins
Electrical - No Crank/Start Discharged or Low Battery
TECHNICAL
Bulletin No.: 10-08-50-001
Date: February 15, 2010
Subject: No Crank, No Start, Discharged or Low Battery (Reprogram Heated Seat Module)
Models:
2006-2010 Chevrolet Impala
2007-2009 Chevrolet Equinox
2007-2009 Pontiac Torrent
Equipped with Front Heated Seats
Condition
Some customers may comment on a no crank, no start, discharged or low battery.
Note
This condition may be intermittent, therefore it is important to check if a revised calibration has been released on TIS2WEB for this concern, even if the
condition cannot be duplicated at the dealer.
Cause
This condition may be caused by the heated seat module discharging the battery. The module keeps the serial data bus active, which creates a
cumulative, continuous amperage draw on the battery after the vehicle is shut down, until the state of charge reaches three volts.
Correction
Important
DO NOT replace the heated seat module or the battery for this concern.
Reprogram the heated seat module with the latest software calibration.
Important
Select the correct calibration files for the appropriate vehicle configuration (body style) and RPO codes.
A revised calibration has been developed to address this condition. Technicians are to reprogram the heated seat module using the Service Programming
System (SPS) with the latest software available on TIS2WEB. Refer to the Service Programming System (SPS) procedures in SI.
When using a Tech 2(R) or a Multiple Diagnostic Interface (MDI) for reprogramming, ensure that it is updated with the latest software version.
During programming, the battery voltage must be maintained within the proper range of 12-15 Volts. Only use the approved Midtronics(R) PSC 550
Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.
Warranty Information
For vehicles repaired under warranty, use the table above.
