Shift Solenoid Valve State And Gear Ratio
WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban 3500 HD, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
| Gear | Shift SOL 1 | Shift SOL 2 | 1 - 2 - 3 - 4 CL PC SOL 5 N.L. | 2 - 6 CL PC SOL 4 N.L. | 3 - 5 REV CL PC SOL 2 N.H. | LOW REV 4 - 5 - 6 CL PC SOL 3 N.H. | 6L45 6L50 Gear Ratio | 6L80 6L90 Gear Ratio |
|---|---|---|---|---|---|---|---|---|
| Park | ON | ON | OFF | OFF | OFF | ON | - | - |
| Reverse | ON | OFF | OFF | OFF | ON | ON | 3.200 | 3.064 |
| Neutral | ON | ON | OFF | OFF | OFF | ON | - | - |
| 1st Braking | ON | ON | ON | OFF | OFF | ON | 4.065 | 4.027 |
| 1st | OFF | ON | ON | OFF | OFF | OFF | 4.065 | 4.027 |
| 2nd | OFF | ON | ON | ON | OFF | OFF | 2.371 | 2.364 |
| 3rd | OFF | ON | ON | OFF | ON | OFF | 1.551 | 1.532 |
| 4th | OFF | ON | ON | OFF | OFF | ON | 1.157 | 1.152 |
| 5th | OFF | ON | OFF | OFF | ON | ON | 0.853 | 0.852 |
| 6th | OFF | ON | OFF | ON | OFF | ON | 0.674 | 0.667 |
| 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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