Stuck
Stuck
Check the diagnostics number
Checking the software
Checking the software
Note! To carry out fault-tracing, the transmission control module (TCM) must be programmed with specific software.
- Ignition on
- Read off the control module diagnostic number.
Check the read off diagnostic number against the diagnostic numbers given in the center table.
If the diagnostic number is included in the table, the control module must be programmed with the latest software.
See the technical journal for information about the most recent software.
Continue - Checking diagnostic trouble codes (DTCs)
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Checking diagnostic trouble codes (DTCs)
- Ignition on
- Read off diagnostic trouble codes (DTCs).
If any other diagnostic trouble codes (DTCs) than TCM-0054 are stored, these must be fault-traced after this fault-tracing is completed.
Continue - Checking diagnostic trouble codes (DTCs)
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Checking diagnostic trouble codes (DTCs)
Checking diagnostic trouble codes (DTCs)
Erasing diagnostic trouble codes (DTCs)
- Ignition off
- Wait for two minutes to allow time for the diagnostic trouble codes (DTCs) to be stored in the control module memory
- Ignition on
- Erase diagnostic trouble codes (DTCs).
Continue - Test driving
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Test driving
Note! Test drive the car according to the driving schedule below to check whether the fault is still active. The test drive is compiled in order to create the conditions in which the diagnostic trouble code (DTC) will be stored again if the fault is active. The TEST MODE function can be used to provoke any diagnostic trouble codes (DTC). The function reduces the conditions for how quickly diagnostic trouble codes (DTCs) are stored in the control module and the test drive becomes easier.
- Start the engine
- Activate TEST MODE.
Note! Do not switch off the engine!
- Disconnect the VIDA station. Test drive the car as described below.
Warning! Please observe traffic regulations.
Note! Before test driving, the transmission should be at operating temperature, approximately 80-90°C.
Shift the gear selector to position D (for Geartronic transmissions, shift as usual up to third gear). Carefully accelerate to a speed slightly higher than 75 km/h. Maintain the same speed for at least 30 seconds.
Hint: The car must be driven at an engine speed where the lock-up function is normally activated.
Criteria for diagnostic trouble code (DTC):
- The transmission fluid temperature must exceed 30°C
- The engine must be running for at least 20 seconds
- Gear selector in position D, 3 or 2 (4T65EV).
Gear selector in Geartronic position and gears 4, 3 or 2 (4T65EV-GT)
- Speed above 75 km/h for at least 5 seconds
- At least 5 seconds since the last gear shift
- Positive engine torque (no engine braking).
Continue - Checking diagnostic trouble codes (DTCs)
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Checking diagnostic trouble codes (DTCs)
- Ignition on
- Read off diagnostic trouble codes (DTCs).
If any other diagnostic trouble codes (DTCs) than TCM-0054 are stored, these must be fault-traced after this fault-tracing is completed.
Was diagnostic trouble code (DTC) TCM-0054 stored?
Yes - DTC
No - NO DTC
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DTC - Checking the component
NO DTC - Fault-tracing information
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Checking the component
- Ignition off
- Disconnect the transmission connector
- Connect adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box to the transmission connector (transmission side)
- Disconnect the transmission connector (control module side).
Check that the resistance between the transmission housing and connector terminal #U (#A18) is 0-50 ohms.
Other information:
- To connect the breakout box to the transmission connector, see Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification.
Was the resistance OK?
Yes - Checking the component
No - Checking the wiring and component
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Checking the component
- Ignition off
- Connect adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box to the transmission connector (transmission and control module side)
- Start the engine.
Check that the voltage between the transmission housing and connector terminal #U (#A18) is battery voltage.
Other information:
- To connect the breakout box to the transmission connector, see Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification.
Is the voltage OK?
Yes - Checking solenoid SL
No - Checking the component
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Checking the component
- Engine idling
- Connect adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box to the transmission connector (control module side)
- The transmission connector disconnected.
Note! Diagnostic trouble codes (DTCs) for the gear-shift position sensor and the solenoids may be stored in the transmission control module (TCM) when disconnecting the transmission connector. These do not need to be fault traced when this fault tracing is complete.
Check that the voltage between any ground terminal and terminal #A18 (#U) is battery voltage.
Other information:
- To connect the breakout box to the transmission connector, see Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification.
Was the voltage OK?
Yes - Checking the wiring and component
No - Checking the wiring and component
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Checking the wiring and component
- Ignition off
- Disconnect the control module.
- Connect the breakout box to the control module connector (transmission side)
- Disconnect the transmission connector
- Connect adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box to the transmission connector (control module side).
Check the control module and transmission connectors. Check for contact resistance and oxidation.
Check the cable between control module terminal #A65 (#B5) and transmission connector terminal #U (#A18) (control module side). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
If a fault was not detected in the wiring or terminals replace the control module.
Other information:
- To connect the breakout box to the control module, see Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- To connect the breakout box to the transmission connector, see Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Was a fault detected in the cables or terminals?
Yes - Verification
No - Checking the wiring and component
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Checking the wiring and component
- Ignition off
- Open the transmission control system
- Connect adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box to the transmission connector (transmission side).
Check that the pins in the pressure switch module connector are not loose or bent. Check that the connector is correctly connected.
Check the transmission and pressure switch module connectors. Check for contact resistance and oxidation.
Check the cable between control module terminal #U (terminal #A18) and pressure switch module connector terminal #B. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check the transmission oil filter. Check forabnormalamounts of particles in the oil.
Replace the oil filter if necessary.
Replace the pressure switch module if no abnormal amount of particles were found in the oil filter or there was no fault in the wiring.
Other information:
- To open the transmission control system, see Wiring harness / oil temperature sensor, replacing Removal and Replacement
- To connect the breakout box to the control module, see Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- To connect the breakout box to the transmission connector, see Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- To replace the cable harness, see Wiring harness / oil temperature sensor, replacing Removal and Replacement
- To replace the oil filter, see Gearbox fluid, replacing Removal and Replacement
- To replace the pressure switch module, see Pressure sensor, replacing
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Select Continue when the fault has been remedied.
Continue - Resetting the adaptation
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Checking solenoid SL
- Ignition off
- Connect the breakout box to the control module connector (transmission side).
Check solenoid SL by measuring the resistance between terminals #A51 (#A51) and #A53 (#A53).
When the transmission is cold (20°C), the resistance must be 10-11 ohms. When the transmission is at operating temperature (150°C), the resistance must not exceed 16 ohms.
Other information:
- To connect the breakout box, see Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification.
Was the resistance OK?
Yes - Connecting the T pipe
No - Checking the wiring
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Connecting the T pipe
- Deactivate the function for STC/DSTC by pressing in the button for STC/DSTC for approximately 2 seconds
- Ignition off
- Connect T-pipe999 7002 Adapter automatic gearbox 4T65E 999 7002 Adapter Automatic Gearbox 4T65E with oil pressure gauge 999 5114 MANOMETER 10 KP 999 5114 Manometer 10 Kp to the coolant hose from the transmission for the oil cooler
- Raise the car so that the drive wheels are clear of the ground.
Warning! Ensure that the car safely raised. Ensure that there are no objects caught in the front wheels.
- Start the engine
- Gear selector in position P
- Activate the function "Block automatic shifting".
Other information
- To connect the T-pipe to the oil cooler for the transmission. See T-pipe, connection to oil cooler .
Allow the engine to run. Select Continue.
Continue - Checking solenoid SL
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Checking solenoid SL
- Engine running
- Move the gear selector to position D
- Activate the solenoid for gear 2 and then the lock-up function
- Check the pressure change on the oil pressure gauge. A considerable change in pressure should be observed
- Deactivate the lock-up function. Check the pressure change.
Repeat the activation and deactivation of the lock-up function a few times to ensure accurate results.
Hint: Unchanged pressure means that the control system is defective.
Did the pressure change?
Yes - Replacing the transmission
No - Replacing the control system
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Replacing the control system
- Ignition off.
Fault-tracing indicates a fault in the transmission control system. Replace the control system.
Other information
- To replace the control system, see Control system / valve housing, replacing .
Select "Continue" when the fault has been remedied.
Continue - Resetting the adaptation
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Checking the wiring
- Ignition off
- Control module disconnected
- Connect the breakout box to the control module connector (transmission side)
- Disconnect the transmission connector
- Adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box connected to the transmission connector (control module side).
Check the wiring between control module terminal #A51 (#A51) and transmission connector terminal #T (#A17). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check the wiring between control module terminal #A53 (#A53) and transmission connector terminal #E (#A5). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Remedy as necessary.
Other information:
- To connect the breakout box to the control module, see Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- To connect the breakout box to the transmission connector, see Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Was a fault detected?
Yes - Verification
No - Checking the wiring and component
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Checking the wiring and component
- Ignition off
- Open the transmission control system
- Connect adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box to the transmission connector (transmission side).
Check the cable between transmission connector terminal #T (#A17) and solenoid SL terminal #A. Check the cable between transmission connector terminal #E (#A5) and solenoid SL terminal #B. Check these cables for an open-circuit.
Hint: Check solenoid SL by measuring the resistance between solenoid SL terminals #A and #B. When the transmission is cold (approximately 20°C), the resistance must be 10-11 ohms.
Remedy as necessary.
Other information:
- To open the transmission control system, see Side cover transmission, replacing Side Cover Transmission, Replacing
- To connect the breakout box to the transmission connector, see Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- To replace solenoid SL, see Solenoid lock-up function, replacing
- To replace the cable harness, see Wiring harness / oil temperature sensor, replacing Removal and Replacement
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Continue - Resetting the adaptation
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Replacing the transmission
Fault-tracing indicates a fault in the transmission. Replace the transmission.
Other information:
- To remove the transmission, see Gearbox, removing Gearbox, Removing
- To install the transmission, see Gearbox, installing Gearbox, Installing.
Select "Continue" when the fault has been remedied.
Continue - Resetting the adaptation
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Fault-tracing information
The fault has probably been remedied if the control module has been programmed with new software.
If new software has not been downloaded, the fault-tracing indicates that the control module has previously detected a fault but the fault is no longer active.
Has the control module been programmed with new software?
Yes - FAULT FOUND
No - No Fault Found
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Resetting the adaptation
Resetting the adaptation
Resetting adaptation and the counter for "Transmission oil change"
Hint: The transmission has torque controlled adaptive pressure control. Pressure control means that the transmission regulates the pressure itself during each gear shift. This avoids harsh gear shifting. Each gear shift is evaluated by the control module and stored in the memory. This allows for compensation for wear and tear in the transmission and clutch. It is important that the adaptation in the memory is reset after the transmission has been repaired. This is to ensure normal operation. The oil is replaced during repair; the "Transmission oil change" counter must be reset. If the counter is not reset when the fluid is drained and replaced, there is a risk that a diagnostic trouble code (DTC) will be stored in incorrect circumstances.
Note! This applies only if the transmission or one of the components in the transmission have been replaced.
- Ignition on.
Click on the VCT2000 symbol to reset the adaptation and counter.
Continue - FAULT FOUND
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Resetting the adaptation
Resetting the adaptation, AW55-50/51SN, AW50/51 AWD, 4T65EV-GT
DONE - Verification
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Verification
Checking diagnostic trouble codes (DTCs)
DTC - Fault-tracing information
NO DTC - FAULT FOUND
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - Exit Fault-Tracing
No - Attempt New Test
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Attempt New Test - Check the diagnostics number
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