Vibration In All Shift Lever Positions (A/T)

Vibration in all shift lever positions

Drive plate defective or transmission misassembled

Torque converter defective

ATF pump worn or binding

Notes

Check for a misassembled transmission, and check the drive plate for wear and damage. Replace the drive plate if it is worn or damaged.

Notes

Check the stall speed A/T Stall Speed Test.

Notes

Check the line pressure A/T Pressure Test.

Notes

Improper alignment of ATF pump and the torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.

Notes

Inspect the differential pinion gears for wear. If the differential pinion gears are worn, replace the differential assembly, replace the ATF strainer, thoroughly clean the transmission, and clean the cooler and lines.

Notes

Replace the torque converter.

Notes

Be careful not to damage the torque converter housing when replacing the main ball bearing. You may also damage the ATF pump when you torque down the main valve body. This will cause ATF pump seizure, use the proper tools.