Service VME - Hard To Shift or Will Not Shift Out of Park - keywords 4T65E 4T80E garage gear shifter transmission

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

This is a dealer VME going out to Buick service managers, concerning Lucerne Transmission shifter assembly.

Some 2006 Buick Lucerne customers may complain of a harsh shift or the car will not shift from park to reverse or drive.

This condition may be caused by a ½ second delay in the BTSI solenoid after brake is applied and if the customer shifts too soon. The shifter will hang up and will not shift.

The customer must be advised not to move the shifter too quickly.

Please do not replace the assembly shifter for this complaint as it will not make any difference.

For your reference, PIC4004 has been created.

Thanks,

This is Hassan Abdallah - Brand quality group

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.