Soft Shifts
WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Soft Shifts
| Checks | Cause |
|---|---|
| Line Pressure | Too low |
| Pressure Control Solenoid Valve (320) |
|
| PCM | Failed |
| Accumulator Piston |
|
| Accumulator Spring | Incorrect |
| Calibration PROM | Incorrect |
| Check the PCM for current DTCs. | |
| Shift Solenoids | Leaking |
| 4th Accumulator Piston Pin Retainer Ring | Missing |