The Control Solenoid Valve
and Transmission Control Module Assembly Performance Test is not functional on
the Tech 2 or GDS on the following models equipped with the 6T40/45 automatic
transmission (RPO MHC, MH7, MH8): 2010 LaCrosse, Equinox, Terrain; 2008-2010
Malibu; 2008-2009 G6 and AURA.
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The Control Solenoid Valve
and Transmission Control Module Assembly Performance Test procedure detailed in
the Service Information is used to test the functionality of the control
solenoid (with body and TCM) valve assembly solenoids for a gross stuck open or
closed condition. This procedure is done with the control solenoid (with body
and TCM) valve assembly solenoid removed from the transmission. This procedure
will not be functional until 2011.
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The individual solenoids can
be commanded on and off with the scan tool when the transmission is assembled
and the engine is running.
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In addition, software to turn
on the Control Solenoid Valve and Transmission Control Module Assembly Cleaning
Procedure, which is used to cycle the solenoids and valves in the control
solenoid valve assembly in an attempt to dislodge debris and free up the valves
after a performance DTC has set, was recently released via TIS2Web. Please make
sure your scan tool is updated with the latest software release.
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- Thanks to Ronald Mitchell
Working on a '08 Enclave, attempted to perform the Service Clean Procedure and can not find the application thru the Tech 2 (special functions or module update screens). Latest update was performed on 02-15-10, calibration number 30.002. Please advise.
The Tech 2 and GDS software to turn on the Control Solenoid Valve Assembly Cleaning Procedure for 6T40/45 front wheel drive applications was released to the field at the end of 2009. All front wheel drive 6T70/75 applications will remain off.