A/T Controls - Performance Issues/MIL ON/DTC's Set
Bulletin No.: 07-07-30-004Date: February 20, 2007
TECHNICAL
Subject:
6T70/75 Automatic Transmission - Performance Concerns, Check Engine Light On, DTCs P0716, P0741, P0776, P0777, P0796, P0797, P0843, P0873, P0878, P0990, P2714, P2723, P2724 Set (Reprogram TCM)
Models:
2007 GMC Acadia with 6T75 Automatic Transmission (RPO MY9 or MH6) and Built Prior to 01/24/2007
2007 Pontiac G6 with 6T70 Automatic Transmission (RPO MH2) and Built Prior to 01/26/2007
2007 Saturn AURA with 6T70 Automatic Transmission (RPO MH2) and Built Prior to 01/09/2007
2007 Saturn OUTLOOK with 6T75 Automatic Transmission (RPO MY9 or MH6) and Built Prior to 01/24/2007
Attention:
Use GMVIS to determine the vehicle build date.
Condition
Some customers may comment on a check engine light and transmission performance issues with one of the following DTC codes set.
Cause
The cause of this condition may be due to the TCM calibration parameters being too sensitive, allowing the code to inadvertently set.
Correction
SI information has changed and the valve clean procedure no longer requires the transmission fluid to be changed.
Prior to making any repairs, perform the valve cleaning procedure using the Tech 2(R) special test function and reprogram the TCM with an updated calibration. This new service calibration is available on TIS2WEB. Refer to Service Programming System (SPS) using the appropriate SI procedures. If you cannot access the calibration, call the Techline Customer Support Center.
Warranty Information
For vehicles repaired under warranty, use the table.
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