19-AT-012G

GROUP
AUTOMATIC
TRANSMISSION
DATE
JUNE 2019
Technical Service Bulletin
SUBJECT:
NUMBER
19-AT-012G
MODEL(S)
G70 (IK)
G80 (DH)
G90 (HI)
AUTOMATIC TRANSMISSION INCORRECT RATIO DTC P0731,
P0732, P0733, P0734, P0735, P0736, P0729, P076F & P0730
Description: This TSB provides a procedure to diagnose and repair a transaxle for the following
Incorrect Ratio DTC (transaxle clutch slipping more than 200 rpm in gear).
DTC
DESCRIPTION
P0731
P073100
Gear 1 incorrect ratio
P0732
P073200
Gear 2 incorrect ratio
P0733
P073300
Gear 3 incorrect ratio
P0734
P073400
Gear 4 incorrect ratio
P0735
P073500
Gear 5 incorrect ratio
P0736
P073600
Reverse incorrect ratio
P0729
P072900
Gear 6 incorrect ratio
P076F
P076F00
Gear 7 incorrect ratio
P0730
P073000
Gear 8 incorrect ratio
2019~ G70 (IK)
Applicable Vehicles: 2019~ G80 (DH)
2019~ G90 (HI)
WARRANTY INFORMATION: Normal Warranty applies
SERVICE PROCEDURE:
1. Connect a GDS and check for DTC. Record the DTC and delete the DTC.


If any solenoid DTC are found, refer to the appropriate TSB or shop manual and follow the
repair procedure.
If no solenoid DTC are found, go to Step 2.
2. If any of the above DTC are found, refer to the appropriate shop manual, Automatic
Transmission section. Replace the transmission.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair