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Programming of electronic control unit 6T30 6T35 6T40 6T31 6T41 6T46 6T45 6T50 6L45 6L50 6L80 6L90 6T70 6T75 6T80

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  • Brand: MAKTRANS-VB
  • Product Code: 6LTECUFF
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  • Weight (kg): 0.01
  • Availability: 1992
$60.00
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All 6-speed General Motors gearboxes (6T30 6T35 6T40 6T31 6T41 6T46 6T45 6T50 6L45 6L50 6L80 6L90 6T70 6T75 6T80) have one weak point, this is an electronic  control unit. It is combined into one unit with solenoids and is located in the gearbox oil pan. With certain runs (more than 100,000 km) or overheating, the ECU may begin to fail, in this case, the diagnostics may show such errors:

  • P2714 - Blocking in the `off position` of the pressure control solenoid valve (solenoid) 4.
  • P2715 - Blocking in the `on position` of the pressure control solenoid (solenoid) 4.
  • P0796 - Blocking in the off position of the pressure control solenoid valve (solenoid) 3.
  • P0797 - Blocking in the `on position` of the pressure control solenoid valve (solenoid) 3.
  • P0776 - Blocking in the off position of the pressure control solenoid valve (solenoid) 2.
  • P0777 - Blocking in the `on position` of the pressure control solenoid valve (solenoid) 2 (3,5, R).
  • P0741 - Blocking in the `off position` of the TCC torque control solenoid valve (solenoid).
  • P0742 - Blocking in the `on position` of the TCC torque control solenoid valve (solenoid).
  • P2723 - Blocking in the `off position` of Pressure Control Solenoid (Solenoid) 5.
  • P0742 - Blocking in the `on position` of the pressure control solenoid (solenoid) 5.
  • P0788 - Shift Timing Solenoid "A" High (Increased response time of solenoid A).
  • P0842 - Circuit low voltage of pressure sensor 1.
  • P0843 - Circuit high voltage of pressure sensor 1.
  • P0872 - Circuit low voltage of pressure sensor 3.
  • P0873 - Circuit high voltage of pressure sensor 3.
  • P0877 - Circuit low voltage of pressure sensor 4.
  • P0878 - Circuit high voltage of pressure sensor 4.
  • P0989 - Circuit low voltage of pressure sensor 5.
  • P0990 - Circuit high voltage of pressure sensor  5.
  • P0073 - Transmission Fluid Pressure Sensor / Switch "C" Circuit High.
  • P2714 - Pressure Control Solenoid "D" Performance or Stuck Off.
  • P2723 - Solenoid valve -coupling solenoid 5 ​​(1,2,3,4) -Lock in the off state.

The solution is to replace the block with a used one or a new one, while the block must be flashed, otherwise it won’t work. Also, part of the errors can be caused by a malfunction of the solenoids themselves, we can repair them - here you can read how the repair of the 6T30 6T40 solenoids takes place.

Maktrans specialists have equipment that allows to flash electronic blocks of almost all 6-speed automatic transmissions of the General Motors concern, now we can perform the following operations:

  • Block of programming
  • Transfer firmware between ECUs (from old to new)
  • Adaptation Transfer
  • Programming new blocks


The process is as follows, the unit is connected to the programmer (you can also flash without a car) and the specialist using special software, performs the required task.

 

Firmware price — 60$

 

Any questions? The repair departmentwill advise on any technical issues:

Warsaw Repair department

  • +48 799 920753 
  • +48 574 515898 ​​

Tags: 24260028 24285009 24257276 24241873

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