Excessive Shock or Flares on All Upshifts and Downshifts

Excessive shock or flares on all upshifts and downshifts

Diagnostic Procedure:

1. Worn or damaged engine or transmission mounts

2. A/T clutch pressure control solenoid valve B defective

3. A/T clutch pressure control solenoid valve C defective

4. Input shaft (mainshaft) speed sensor defective

5. Output shaft (countershaft) speed sensor defective

6. ATF temperature sensor defective

7. Foreign material in separator plate orifice

Also check for:

- Check engine and transmission mounts.
- Check for a stored DTC, and check for loose connectors.
- Inspect the A/T clutch pressure control solenoid valve filter/gasket and the O-rings for wear and damage, and inspect the solenoid valves for seizure.
- Check the input shaft (mainshaft) speed sensor and the output shaft (countershaft) speed sensor installation.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.