Service Procedure
SERVICE PROCEDURETCM Reprogramming
1. Connect C-III to the vehicle to begin the reprogramming procedure.
^ Make sure to erase DTCs from all systems.
^ TCM initialization is not needed for 7 speed A/T reprogramming.
REPROGRAMMING CAUTION
2. Navigate C-III to the reprogramming screen shown in Figure 1 example.
NOTE:
^ Do not use the "Reprogramming / Programming" selection.
^ Select the Model and Model Year, and then navigate to Direct Diagnosis > Reprogramming.
^ TCM initialization is not needed for 7 Speed A/T reprogramming.
3. On your C-III screen look for a Transmission Part Number in the Part Number column (see Figure 1 example).
^ If there is no Transmission Part Number listed, this bulletin does not apply.
^ If a Transmission Part Number is listed, write it on the Repair Order and then go to step 4.
4. Compare the P/N you wrote down to the numbers in the Current TCM P/N column in Table A above.
^ If there is a match this bulletin applies. Continue with the reprogramming procedure.
^ If there is not a match this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.
5. If this bulletin applies and you have performed TCM reprogramming; when reprogramming is complete the screen in Figure 2 displays.
6. Erase DTCs in all systems.
^ During TCM reprogramming DTCs will set in several systems and must be erased before ECM reprogramming.
7. Go to ECM Reprogramming below.
ECM Reprogramming
^ Make sure to erase DTCs from all Systems.
^ If your not familiar with the reprogramming procedure refer to "CONSULT-III (C-III) ECM Reprogramming"
1. Restart the C-III session by selecting the Home icon in the upper left corner of the screen.
2. Navigate C-III to the ECM Reprogramming screen shown in Figure 1A.
^ Use the "Reprogramming / Programming" selection.
^ Do not use Direct Diagnosis > Reprogramming.
3. On your C-III screen, look at the Part Number column (see Figure 1A example):
^ If this column is blank (no part number listed), this reprogramming does not apply.
NOTE:
The ECM reprogramming used for this bulletin is also used for another issue and may have already been performed on your vehicle.
^ If a Part Number is listed, write it on the Repair Order.
4. Compare the Part Number you wrote down to the numbers in the Current ECM P/N column in Table A-1.
^ If there is a match, this reprogramming applies. Continue with the reprogramming procedure.
NOTE:
If there are two Engine lines (two ECM reprogramming options) on your C-III screen, use the one that does not have the message "Caution! Use ONLY with ITBXX-XXX".
^ If there is not a match, this reprogramming does not apply.
5. When ECM reprogramming is complete, the screen in Figure 2 displays.
6. Make sure to erase DTCs from all systems.
NOTE:
During reprogramming, DTCs will set in several systems and must be erased.
7. Test drive the vehicle and confirm the incident is resolved.