Checking & Adding Power Steering Fluid (With Hydro-boost)
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When adding fluid or making a complete fluid change, always use the proper power steering fluid. Failure to use the proper fluid will cause hose and seal damage and fluid leaks.
- If the power steering system has been serviced, bleed the power steering system to remove any trapped air from the system. Refer to Bleeding Power Steering System .
Important: The oil level will appear falsely high if the hydro-boost accumulator is not fully charged. Do not apply the brake pedal with the engine off, this will discharge the hydro-boost accumulator.
- Fully charge the hydro-boost accumulator using the following procedure:
- 2.1. Start the engine.
- 2.2. Firmly apply the brake pedal 2 to 3 times.
- 2.3. Turn the engine Off.
Important: The Add and Cold Full marks on the cap stick are calculated for oil at ambient temperature. If the oil is hot, the oil level may appear slightly high.
- Clean the area surrounding the reservoir cap.
- Remove the reservoir cap
Important: The ideal oil level is between the Add and the Full Cold marks. Since overfilling is just as undesirable as under filling, there is no reason to full all the way up to the Full Cold mark.
- Inspect the power steering pump fluid level at regular intervals. Add fluid when required.
- If the fluid level is low, add power steering fluid to the proper level.
- Install the reservoir cap
- When checking the fluid level after servicing the steering system, bleed the air from the system. Refer to Bleeding Power Steering System .