Stuck
Stuck
Checking the diagnostic 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 the diagnostic trouble codes (DTCs)
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Checking the diagnostic trouble codes (DTCs)
- Ignition on
- Read off diagnostic trouble codes (DTCs).
If any other diagnostic trouble codes (DTCs) than TCM-0053 are stored, these must be fault-traced and remedied after this fault-tracing is completed.
Continue - Checking the diagnostic trouble codes (DTCs)
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Checking the 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 (third gear with Geartronic). Carefully accelerate to 50-65 km/h. Maintain the same speed for at least 20 seconds.
Hint: The car must be driven at an engine speed where the lock-up function is not 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 50-65 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)
------------------------
Checking diagnostic trouble codes (DTCs)
- Ignition on
- Read off diagnostic trouble codes (DTCs).
If any other diagnostic trouble codes (DTCs) than TCM-0053 are stored, these must be fault-traced and remedied after this fault-tracing is completed.
Was diagnostic trouble code (DTC) TCM-0053 stored?
Yes - DTC
No - NO DTC
------------------------
DTC - Checking the wiring
NO DTC - Fault-tracing information
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Checking the wiring
Hint: This step requires 2 breakout boxes.
- Ignition off
- Disconnect the transmission control module (TCM).
- Connect adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box to the transmission control module (TCM) connector (transmission side).
- Disconnect the gearbox 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 control module (TCM) side).
- Connector to the transmission unplugged.
Check the cable between transmission control module (TCM) #A51 (#A51) and transmission #U (#A18) for open-circuit and short-circuit to either voltage or ground.
Check the cable between transmission control module (TCM) #A53 (#A53) and transmission #E (#A5) for open-circuit and short-circuit to supply voltage or ground.
Other information:
- Connecting a breakout box to the transmission control module (TCM): Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- Signal description. Connector 4T65 EV/EV-GT, 4T65EV-GT Connector 4T65 EV/EV-GT
- For information on signals on the transmission control module (TCM): 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 component
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Checking the component
- Ignition off
- Disconnect the gearbox connector
- Connect adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box to the gearbox connector (gearbox side)
- Unplug the transmission connector (transmission control module (TCM) side).
Check that the resistance between the gearbox housing and the gearbox connector terminal #U (#A18) is 0-50 ohms.
Other information:
- Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- Signal description. Connector 4T65 EV/EV-GT, 4T65EV-GT Connector 4T65 EV/EV-GT
- For information on signals on the transmission control module (TCM): Signal specification, 4T65EV-GT Signal Specification
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Was the resistance OK?
Yes - Checking the component
No - Checking the wiring and component
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Checking the component
- Ignition off
- Adapter951 1505 Adapter 20 pin 951 1505 Adapter 20 Pin and breakout box951 1428 Breakout box 951 1428 Breakout Box connected to the gearbox connector (transmission control module (TCM) side and transmission side).
- Start the engine.
Check that the voltage between the gearbox housing and the gearbox connector terminal #U (#A18) is battery voltage.
Other information:
- Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- Signal description. Connector 4T65 EV/EV-GT, 4T65EV-GT Connector 4T65 EV/EV-GT
- For information on signals on the transmission control module (TCM): Signal specification, 4T65EV-GT Signal Specification
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Was the voltage OK?
Yes - Checking solenoid SL
No - Checking the component
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Checking the component
- Engine idling
- 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 (transmission control module (TCM) side).
- Gearbox connector disconnected.
Note! When the transmission connector is unplugged, the transmission control module (TCM) will generate diagnostic trouble codes (DTCs) for solenoids and the gear shift position sensor. These do not require fault tracing after completion of this fault tracing.
Check that the voltage between any ground terminal and terminal #U (#A18) is battery voltage.
Other information:
- Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information on signals on the transmission control module (TCM): Signal specification, 4T65EV-GT Signal Specification
Was the voltage OK?
Yes - Checking the wiring and component
No - Checking the wiring and component
-------------------------------------------------
Checking the wiring and component
- Ignition off
- Disconnect the transmission control module (TCM).
- Connect a breakout box to the transmission control module (TCM) connector (transmission side).
- 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 control module (TCM) side).
- Disconnect the gearbox connector
Check the connectors of the transmission control module (TCM) and the transmission for contact resistance and oxidation.
Check the cable between transmission control module (TCM) terminal #A65 (#B5) and gearbox 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.
Replace the transmission control module (TCM) if no fault was detected in the wiring or terminals.
Other information:
- Connecting a breakout box to the transmission control module (TCM): Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information on signals on the transmission control module (TCM): 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
-------------------------------------------------
Checking the wiring and component
- Ignition off
- Open the gearbox 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 gearbox connector (gearbox side).
Check the gearbox 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 gearbox oil filter. Check forabnormalamounts of particles in the oil.
Replace the oil filter if necessary.
Replace the pressure switch module if no particles were found in the oil filter or there was no fault in the wiring.
Other information:
- Connecting a breakout box to the control module: Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- Opening the transmission control system: Wiring harness / oil temperature sensor, replacing Removal and Replacement
- For information on signals on the transmission control module (TCM): Signal specification, 4T65EV-GT Signal Specification
- Wiring harness / oil temperature sensor, replacing Removal and Replacement
- Replacing the oil filter: Gearbox fluid, replacing Removal and Replacement
- Replacing the pressure switch module: Pressure sensor, replacing
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Was an abnormal quantity of particles found in the gearbox oil trough and oil filter?
Yes - Replacing the gearbox
No - Resetting adaptation
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Checking solenoid SL
- Ignition off
- Breakout box connected to the transmission control module (TCM) connector (transmission side).
Check solenoid SL by measuring the resistance between transmission control module (TCM) #A51 (#A51) and #A53 (#A53).
When the gearbox is cold (20°C), the resistance must be 10-11 ohms. When the gearbox is at operating temperature (150°C), the resistance must not exceed 16 ohms.
Other information:
- Connecting a breakout box to the transmission control module (TCM): Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- For information on signals on the transmission control module (TCM): 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 gearbox for the oil cooler
- Raise the vehicle so that the drive wheels hang freely.
Warning! Ensure that the vehicle is safely raised and 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
- 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 indicates that the control system is damaged.
Did the pressure change?
Yes - Replacing the gearbox
No - Replacing the control system
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Replacing the control system
- Ignition off
Fault-tracing indicates a fault in the gearbox control system. Replace the control system.
Other information
- Control system / valve housing, replacing
Select "Continue" when the fault has been remedied.
Continue - Resetting adaptation
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Checking the wiring
- Ignition off
- Transmission control module (TCM) disconnected.
- Breakout box connected to the transmission control module (TCM) connector (transmission side).
- Disconnect the gearbox 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 (transmission control module (TCM) side).
Check the cable between transmission control module (TCM) #A51 (#A51) and transmission connector #T (#A17) for open-circuit and short-circuit to ground or voltage.
Check the wiring between control module terminal #A53 (#A53) and gearbox 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:
- Connecting a breakout box to the transmission control module (TCM): Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box
- Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information on signals on the transmission control module (TCM): 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
-------------------------------------------------
Checking the wiring and component
- Ignition off
- Open the gearbox 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 gearbox connector (gearbox side).
Check the cable between gearbox connector terminal #T (#A17) and solenoid SL terminal #A. Check the cable between gearbox 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 gearbox is cold (approximately 20°C), the resistance must be 10-11 ohms.
Remedy as necessary.
Other information:
- Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions
- For information on signals on the transmission control module (TCM): Signal specification, 4T65EV-GT Signal Specification
- Opening the transmission control system: Side cover transmission, replacing Side Cover Transmission, Replacing
- Solenoid lock-up function, replacing
- Wiring harness / oil temperature sensor, replacing Removal and Replacement
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Continue - Resetting adaptation
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Replacing the gearbox
Fault-tracing indicates a fault in the gearbox. Replace the gearbox.
Other information:
- Gearbox, removing Gearbox, Removing
- Gearbox, installing Gearbox, Installing
Select "Continue" when the fault has been remedied.
Continue - Resetting adaptation
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Fault-tracing information
If the transmission control module (TCM) has been programmed with new software, the fault is probably remedied.
If new software has not been loaded, fault tracing indicates that the transmission control module (TCM) detected a fault earlier, but it 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 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 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 - Checking the diagnostic number
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