Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Transmission Fluid Pressure Switch Logic
2004 Oldsmobile Bravada AWDSECTION Transmission Fluid Pressure Switch Logic
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
| Gear | TFP SW 1 | *TFP SW 3 | TFP SW 4 | TFP SW 5 |
|---|---|---|---|---|
| Park (Engine ON) | Low | Low | High | High |
| Reverse EVT (Engine ON) | Low | Low | Low | High |
| Neutral | Low | Low | High | High |
| EVT Mode 1 (Engine ON) | Low | Low | High | High |
| Drive 1st | Low | High | High | High |
| Drive 2nd | Low | Low | High | Low |
| EVT Mode 2 | High | High | High | High |
| Drive 3rd | High | High | High | High |
| Drive 4th | High | High | Low | Low |
| EVT Mode 2 | High | High | High | High |
| Power Off Low Default | Low | High | High | High |
| Power Off High Default | High | High | High | High |
| High = 12V (Switch Open or Pressurized) Low = 0 volts (Switch Closed or No Pressure) Note: All TFP switches are normally closed (NC) *TFP switch 2 does not exist |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.