K 1500 Truck 4WD V8-4.8L VIN V (1999)
3. Attach J 43485 to J 35555 or equivalent.
4. Place J 43485 on the pump reservoir filler neck.
5. Apply a vacuum of 20 Hg maximum.
6. If the vacuum drops again, repair or replace the pump. If the vacuum holds steady, continue to check the other parts of the steering system.
7. Observe the fluid.
IMPORTANT: Fluid must be free from bubbles. Be aware of periodic bubbles that indicate a loose connection or leaking O-ring seal in the
return hose or the pressure hose.
IMPORTANT: Fluid must be free from discoloration.
8. If condition persists, replace the following parts:
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The return hose clamps
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The return hose O-rings
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The pressure hose O-rings
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The gear cylinder line O-rings
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The reservoir to pump O-ring
9. Repeat the bleed procedure from the beginning.
10. Drive the vehicle approximately 16 kilometers (10 miles) to warm the system to operating temperature. Evaluate vehicle on a smooth flat surface.
11. To check for noise problems, verify the following items:
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There is smooth power assist.
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The vehicle operates quietly.
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The pump maintains the proper fluid level.
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There is no leaking in the steering system.
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The fluid is free of foam or discoloration.
