A/T Controls - Harsh Shifts/Multiple DTC's Set/Vibration: Overview
Classification: AT11-001AReference: ITB11-008A
Date: April 12, 2011
2011 M; TRANSMISSION SHIFT ISSUES AND/OR A/T DTC STORED
This bulletin has been amended. The APPLIED VEHICLES and IF YOU CONFIRM sections have been revised. Please discard all previous versions of this bulletin.
APPLIED VEHICLES: 2011 M37/M56 (Y51)
APPLIED VINS & DATES
IF YOU CONFIRM:
The 7 speed automatic transmission in an Applied Vehicle has one or more of the following conditions:
^ DTC P0729, P0732, P0733, P0734, P0735 and/or P1734 stored in the ECM and/or TCM
^ Excessive engine braking felt after lifting off the accelerator pedal
^ Hesitation when accelerating from a stop
^ Harsh downshift from 7th gear during hard acceleration
^ Excessive vibration during light acceleration
ACTIONS:
1. Perform TCM reprogramming.
^ Refer to Step 3 under TCM reprogramming in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on.
2. Perform ECM reprogramming.
^ Refer to Step 3 under ECM reprogramming in the SERVICE PROCEDURE to confirm ECM reprogramming applies and is needed for the vehicle you are working on.
IMPORTANT:
The purpose of ACTIONS (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair.
CLAIMS INFORMATION