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Fluid Pressure High or Low

Checks

Causes

Fluid Pump Assembly (201)

    • Inspect for loose fluid pump bolts (204).
    • Inspect for leaking or damaged fluid pump outlet seals (24) and oil filter seal.
    • Inspect for improperly installed, restricted or damaged oil filter (203).
    • Inspect for sticking line pressure blow off valve (304).
    • Inspect for worn, sticking or damaged pressure regulator valve (309) or pressure regulator valve spring (308).
    • Inspect for damaged or restricted oil ports in the oil pump body (303).

Torque Converter Housing (208)

    • Inspect for missing or restricted differential lube oil circuit orifice.
    • Inspect for missing front differential carrier baffle (205).

Control Solenoid Valve Assembly (w/Body and TCM) (7)

    • Inspect for leaking or damaged filter plate assembly seals (8).
    • Verify VBS operation is not stuck high or low.

Case Assembly (50)

    • Inspect for proper fluid level.
    • Inspect for missing lube oil circuit orifice or front differential carrier baffle (62).
    • Inspect for leaking or damaged valve body spacer plate assembly (12).
    • Inspect for damaged or leaking fluid check valve (55).
    • Inspect for leaking, damaged or broken fluid level control valve (13).

Torque Converter Assembly (28)

    • Inspect for damaged torque converter clutch seal (inside converter assembly).
    • Inspect for damaged or disengaged torque converter hub to oil pump drive gear.
   


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© Copyright Chevrolet. All rights reserved