GEN TRANS FLT code... what is mean

"general transmission fault". It is the same as a "check engine" light. Here is a procedure to retrieve active codes;
Place the shift lever in neutral.
• Set the parking brake.
• Turn the ignition key on but do not start the engine. If the engine is already running, you may
still retrieve codes, however, do not engage the starter if the engine stalls.
• To Retrieve Active Codes: Start with the key in the on position. Turn the key off and on two
times within five seconds ending with the key in the on position. After five seconds, the service
lamp begins flashing two-digit fault codes. If no faults are active, the service light will flash
code 25 (no codes). This is also the procedure to enter, see Product Diagnostic Mode
(PDM) on page 19 for details.
Note: An “88” may show up in the dash at key on, which is a normal power-up test of the display

 

That should be in your owners manual for the transmission. Do you still have it?

 

Product Diagnostic Mode (PDM)
Product Diagnostic Mode (PDM) is used to help diagnose inactive codes that may have been set
during normal driving. This diagnostic mode increases the sensitivity of the fault sensing capability
This procedure tests loose, degraded, and intermittent connections. Use the active fault isolation
procedure to guide you to the wiring and connectors that are associated with the inactive fault
codes. Flex the wiring harness and connectors and attempt to recreate the fault after activating
(PDM).
PDM is only to be used by a trained service technician in an authorized dealer.
This procedure is to be used prior to performing fault isolation procedures for component type
codes when there are no active codes present.
To enter PDM mode
Note: Vehicle will not start in Product Diagnostic Mode (PDM). You must turn vehicle key “OFF”
and allow the system to power down to exit PDM.
• Vehicle must be stationary, engine must not be running, vehicle parking brake must be set.
• Perform two key clicks of the ignition switch starting in the “ON” position and ending in the
“ON” position
Note: An “88” may show up in the dash at key on, which is a normal power-up test of the display.
• The gear display will flash a 25 then a solid “PD” (Product Diagnostic Mode) and the mode will
be activated.
• The service light shall flash code 25 once indicating no codes. The service light shall then
illuminate solid to indicate PDM until such time that an active code is detected or PDM is
exited.
• Refer to PDM section in Fault isolation procedure for the inactive fault to be diagnosed.
• “PD” will remain in gear display until an active fault has been set during the PDM fault isolation
procedure.
• If the fault is detected during PDM mode the gear display will display the active fault/s. The
warning tone will only sound when the fault is active and the tone will stop when the fault is
inactive. The fault will stay in the gear display until the system is powered down.
Active codes set during PDM mode will not be stored as inactive.
• If a fault is detected, exit PDM mode and perform the corresponding “Fault Isolation
Procedure”.
• To exit PDM mode, power the system down by turning the key to the “OFF” position.
PDM will only work with the following inactive codes
11, 13, 14, 15,16, 17, 18, 19, 21, 22, 29, 33, 34, 35, 36, 43, 44, 46, 51, 52, 56, 57, 58, 61, 63, 65,
66, 67, 74, and 99.

 

Truck won't turn over when fault codes are on. EATON Fuller 10 AUTOMATIC. International in Cheyenne Wyoming changed out the X-Y shifter and the wiring harness too. What is next??

 

Get the codes scanned by a proper scan tool and troubleshot.