Fluid Pressure High or Low
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
| Checks |
Causes |
| Torque Converter Housing with Fluid Pump Assembly (2) |
- Inspect for worn, sticking, or damaged pressure regulator valve (233).
- Inspect for worn, sticking, or damaged pressure regulator valve outer spring (234).
- Inspect for worn, sticking, or damaged pressure regulator valve inner spring (235).
- Inspect for worn, sticking, or damaged isolator valve (236) and sleeve (237).
- Inspect for worn, sticking, or damaged pressure relief ball valve (225).
- Inspect for worn, sticking, or damaged pressure relief ball valve spring (224).
- Inspect for damaged or porous pump cover assembly (219). Inspect for pump surfaces not flat.
- Inspect for excessive fluid pump rotor (217) clearance or damage. Ensure proper selective rotor is being utilized.
- Inspect for damaged fluid pump slide (212). Ensure proper selective slide is being utilized.
- Inspect for worn, sticking, or damaged fluid pump slide outer spring (211).
- Inspect for worn or damaged fluid pump slide seal (213), seal support (214), pivot pin (215), fluid seal ring (209), and O-ring seal (210).
- Inspect for worn or damaged fluid pump vane rings (207) and rotor guide (208).
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| Control Valve Upper Body Assembly (321) |
- Inspect for worn, sticking, or damaged actuator feed limit valve (325) and spring (324).
- Inspect for worn, sticking, or damaged clutch boost valve (329) and spring (330).
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| Control Valve (w/Body and TCM) Valve Assembly |
Inspect for leaking or damaged filter plate assembly seals (16). Verify VBS operation in not stuck high or low. |
| Fluid Filter Assembly (26) |
- Inspect for damaged or restricted fluid filter assembly (26).
- Inspect for damaged fluid filter seal assembly (25).
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