Harsh Shifts
WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Harsh Shifts
| Checks | Causes |
|---|---|
| Throttle Position Sensor | Open or shorted circuit |
| Vehicle Speed Sensor (36) or Input Speed Sensor (250) | Open or shorted circuit |
| Automatic Transmission Fluid Pressure (TFP) (69) |
|
| Trans Fluid Temperature Sensor (Part of 69) | Open or shorted circuit |
| Engine Coolant Temperature Sensor | Open or shorted circuit |
| Pressure Control Solenoid (377) |
|