Main Fluid Pump Pressure High or Low
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Main Fluid Pump Pressure High or Low
| Checks |
Causes |
| Dampener Housing with Fluid Pump Assembly |
- Inspect for worn, sticking, or damaged pressure regulator valve.
- Inspect for worn, sticking, or damaged pressure regulator valve outer spring.
- Inspect for worn, sticking, or damaged pressure regulator valve inner spring.
- Inspect for worn, sticking, or damaged isolator valve and sleeve.
- Inspect for worn, sticking, or damaged pressure relief ball valve.
- Inspect for worn, sticking, or damaged pressure relief ball valve spring.
- Inspect for damaged or porous pump cover assembly. Inspect for pump surfaces not flat.
- Inspect for excessive fluid pump rotor clearance or damage. Ensure proper selective rotor is being utilized.
- Inspect for damaged fluid pump slide. Ensure proper selective slide is being utilized.
- Inspect for worn, sticking, or damaged fluid pump slide outer spring.
- Inspect for worn or damaged fluid pump slide seal, seal support, pivot pin, fluid seal ring, and O-ring seal.
- Inspect for worn or damaged fluid pump vane rings and rotor guide.
|
| Control Valve Upper Body Assembly |
- Inspect for worn, sticking, or damaged actuator feed limit valve and spring.
- Inspect for worn, sticking, or damaged clutch boost valve and spring.
|
| Fluid Filter Assembly |
- Inspect for damaged or restricted fluid filter assembly.
- Inspect for damaged fluid filter seal assembly.
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