Shift Solenoid Valve State and Gear Ratio
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Shift Solenoid Valve State and Gear Ratio
| Gear | Shift SOL 1 | Shift SOL 2 | Aux Line BOOST Valve PC SOL 5 N.L. | 1-3 CL PC SOL 4 N.L. | Hybrid Low, 1-2 CL PC SOL 3 N.H. | Hybrid Direct, 2-3-4 CL PC SOL 2 N.H. | Isolator Valve PC SOL 1 N.H. | Gear Ratio |
|---|---|---|---|---|---|---|---|---|
| Park (Engine Running) | OFF | OFF | OFF | OFF | OFF | OFF | ON | - |
| Reverse (EVT Engine Running) | OFF | OFF | OFF | OFF | ON | OFF | ON | 3.692 |
| Neutral (Engine Running | OFF | OFF | OFF | OFF | OFF | OFF | ON | - |
| EVT Mode 1 (Engine Running) | OFF | OFF | OFF | OFF | ON | OFF | ON | Infinity to 1.70 |
| EVT Mode 1 (Engine Off) | OFF | OFF | ON | OFF | ON | OFF | OFF | Infinity to 1.70 |
| Drive 1st | ON | OFF | OFF | ON | ON | OFF | ON | 3.692 |
| Drive 2nd | ON | OFF | OFF | OFF | ON | ON | ON | 1.705 |
| Drive 3rd | ON | ON | OFF | ON | OFF | ON | ON | 1.000 |
| Drive 4th | ON | ON | OFF | OFF | ON | ON | ON | 0.738 |
| EVT Mode 2 (From 4th) | OFF | ON | OFF | OFF | OFF | ON | ON | - |
| Power Off Low Default | OFF | OFF | OFF | OFF | ON | ON | ON | - |
| Power Off High Default | OFF | OFF | OFF | OFF | ON | ON | ON | - |
| For shift solenoids 1 and 2, "ON" = Solenoid Energized (Pressurized) "OFF" = Solenoid De-energized (No Pressure). For pressure control solenoids, "ON" = Pressurized, "OFF" = No Pressure |
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