The idea here is to note the various versions for the TCM that may be out there and if sufficient data, spot trends.
Format:
Though inspired by recall, this is not specific to an issue or even have to be related to issues. Someone may note how perfect their truck behaves, and if able to gather version data can share it here. Any benefit? Probably not unless some clear trend shows one version better than another through anecdotal or observed data.
Of note: When Nissan service department updates your TCM (software), the part number for that TCM will change. Typically we think of the part number being what you see on the label... though probably also true, they refer to the "part number" in this context to what shows when connected to the vehicle using Consult. Knowing this will help you understand how part numbers can change but no actual physical parts swapped.
Gen2.5 welcome to join in.
Examples of Gen 3 TCM part numbers known to be in service prior to Pawl recall in 2022 (R22**):
4WD: 31039-9BU3A, 9BU2D, 9BU2E, 9BU8A
2WD: 9BU0D, 9BU0E, 9BU1A, 9BU7A
"NEW" TCM part numbers for Gen3 after update (as of 11/1/2022):
4WD: 31039-9BU8B
2WD: 31039-9BU7B
TCM part numbers for Gen2.5:
Older 4WD: 9BU3A
Newer 4WD: 9BT6D (TSB NTB21-073)
Newer 4WD: 9BT8B
Other tidbits, since some seem confused on FB about whether an update was performed... you have to read the tech note in your RO (Repair Order) - or simply ask your advisor. Failing that, you might also see if the labor Op Code is added. This will show if an update performed vs checking for applicability. Such as below underlined, using recall to illustrate.
4WD
Check Software and Reprogram Transmission Control Module (TCM) R22A90
Check Software, Reprogram Not Needed R22A91
2WD
Check Software and Reprogram Transmission Control Module (TCM) R22B10
Check software, Reprogram Not Needed R22B11
Format:
- Year
- 4WD or 2WD
- Truck build date
- Issues noted prior to flash/update (shift behavior, noises, etc) - if any
- TCM version prior to update
- Date of TCM update
- TCM version after update
- Post update observations - anything "fixed"?
Though inspired by recall, this is not specific to an issue or even have to be related to issues. Someone may note how perfect their truck behaves, and if able to gather version data can share it here. Any benefit? Probably not unless some clear trend shows one version better than another through anecdotal or observed data.
Of note: When Nissan service department updates your TCM (software), the part number for that TCM will change. Typically we think of the part number being what you see on the label... though probably also true, they refer to the "part number" in this context to what shows when connected to the vehicle using Consult. Knowing this will help you understand how part numbers can change but no actual physical parts swapped.
Gen2.5 welcome to join in.
Examples of Gen 3 TCM part numbers known to be in service prior to Pawl recall in 2022 (R22**):
4WD: 31039-9BU3A, 9BU2D, 9BU2E, 9BU8A
2WD: 9BU0D, 9BU0E, 9BU1A, 9BU7A
"NEW" TCM part numbers for Gen3 after update (as of 11/1/2022):
4WD: 31039-9BU8B
2WD: 31039-9BU7B
TCM part numbers for Gen2.5:
Older 4WD: 9BU3A
Newer 4WD: 9BT6D (TSB NTB21-073)
Newer 4WD: 9BT8B
Other tidbits, since some seem confused on FB about whether an update was performed... you have to read the tech note in your RO (Repair Order) - or simply ask your advisor. Failing that, you might also see if the labor Op Code is added. This will show if an update performed vs checking for applicability. Such as below underlined, using recall to illustrate.
4WD
Check Software and Reprogram Transmission Control Module (TCM) R22A90
Check Software, Reprogram Not Needed R22A91
2WD
Check Software and Reprogram Transmission Control Module (TCM) R22B10
Check software, Reprogram Not Needed R22B11
