If anyone has any specifics on what we’re looking for with the tech2 it would be appreciated. Thanks.
Do this first, supposed to be done with clean fluid but have heard of guys just trying it as is:
CONTROL SOLENOID VALVE AND TRANSMISSION CONTROL MODULE ASSEMBLY CLEANING
The control solenoid (w/body and TCM) valve assembly cleaning procedure is a specific software based routine, which resides in the TCM. This procedure is activated by the scan tool and 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 diagnostic trouble code (DTC) has set. The transmission fluid is drained and refilled with new fluid, and then the cleaning procedure is performed. When the cleaning procedure ted, the DTC enable criteria is run again, and retested to see if the DTC concern has been corrected.
IMPORTANT: The fluid pan must be removed in order to drain the fluid.
1. Drain and refill the transmission fluid.
2. Operate the transmission to achieve 70°-90°C (158°-194°F).
3. With a scan tool, select the Service Cleaning Procedure. Initiate the cleaning procedure.
4. When the cleaning procedure is completed, shut OFF the ignition for 30 seconds.
Then do this one after a drive:
SERVICE FAST LEARN ADAPTS
Service Fast Learn Adapts is a procedure for 6 speed automatic transmissions in which a series of tests are run to allow the transmission control module (TCM) to learn individual clutch characteristics. Once the clutch data is learned, Service Fast Learn Adapts translates it into the adaptive data cells, which the TCM uses for clutch control during shifts. The scan tool provides initiation of the Service Fast Learn Adapts procedure. This procedure is to be used following transmission repair.
The Service Fast Learn Adapts procedure must be performed when one of the following repairs have been made to the vehicle. Failure to perform the procedure after one of the following repairs may result in poor transmission performance, as well as transmission DTCs being set:
l Transmission internal service/overhaul
l Valve body repair or replacement
l Control solenoid (w/body and TCM) valve assembly replacement
l TCM software/calibration update
l Any service in response to a shift quality concern
IMPORTANT: Ensure the following conditions are met before performing the Service Fast Learn Adapts procedure:
l
Drive wheels are blocked
l
Parking brake is applied
l
Service brake is applied
l
Zero percent throttle and no external engine RPM control
l
Transmission fluid temperature (TFT) is between 70-100°C (158-212°F)
l
Transmission gear selector has been cycled from Park to Reverse 3 times in order to purge air from the reverse clutches.
1. Use the scan tool to navigate to Service Fast Learn Adapts by selecting the following commands:
1. F3: Special Function
2. F1: Transmission Output Controls
3. Service Fast Learn Adapts
IMPORTANT: If at any time during the procedure, required conditions are not met, Service Fast Learn Adapts may abort and the process may need to be started again from the beginning.
2. Use the scan tool to perform the Service Fast Learn Adapts procedure.
IMPORTANT: There are 3 stages required to successfully complete the Service Fast Learn Adapts procedure:
1. PARK test setup
2. DRIVE mode
3. REVERSE mode
These stages are automatically initiated and controlled by the scan tool. As the procedure is being performed, the scan tool data display will provide operator instructions. Follow the scan tool instructions as required. The following are brief descriptions of each of the 3 different stages.
PARK TEST SETUP
While the transmission is in PARK, Service Fast Learn Adapts will prepare for test cycles. The test preparation will include the diagnostic criteria checks, safety checks, vehicle status checks, and then will perform internal transmission test preparation functions such as clutch air purging. The scan tool will instruct the operator to select park and apply the brake only.
DRIVE MODE
CAUTION: Block the wheels before selecting DRIVE. While in DRIVE, if the Scan Tool loses communication or becomes disconnected, the vehicle could move forward. Failure to block the wheels could result in personal injury or property damage.
Once the PARK setup has completed, the scan tool instructs the driver to select DRIVE. Once DRIVE is selected, the TCM engages the individual clutches to learn the clutch volume, full feed fill thresholds, and pressure offsets. The TCM will only cycle through this test once. Running the Service Fast Learn Adapts procedure multiple times will give the same results and is not necessary.
REVERSE MODE
CAUTION: Block the wheels before selecting REVERSE. While in REVERSE, if the Scan Tool loses communication or becomes disconnected, the vehicle could move backward. Failure to block the wheels could result in personal injury or property damage.
Next, the scan tool instructs the driver to select REVERSE. The TCM engages the individual clutches to learn the clutch volume, full feed fill thresholds, and pressure offsets. The TCM will only cycle through this test one time. Running the Service Fast Learn Adapts procedure multiple times will give the same results.
IMPORTANT: When the Service Fast Learn Adapts procedure is completed, the transmission
will remain in a neutral state.
3. Once the procedure is complete, shut OFF the engine and power down the TCM. You will lose communication to the scan tool.
4. Restart the engine. This will complete the Service Fast Learn Adapts procedure.
Troubleshooting
If the Service Fast Learn Adapts will not run and the above stated conditions have been met, ensure the following:
l TFT is between 70-100°C (158-212°F).
l Brakes and brake switch are functioning properly.
l No active DTCs.
l Closed throttle and engine RPM increases above 1500 RPM while in Park Test Setup or at entrance of the test modes.
l Park/Neutral position switch is properly adjusted and functioning.
l Line pressure control is able to provide 1000 kPa and is within specifications.
l Vehicle is not moving, or vibrating excessively.
l Clutches are properly assembled.
