Whine or Growl Noise from the Power Steering System (With Hydraulic Brake Booster)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Did you review the Power Steering System General Description and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Power Steering System |
| 2 | Verify that a whine or growl noise is present. Is a whine or growl noise present? |
Go to Step 3 | System OK |
| 3 | Inspect the power steering fluid for the following indications of contamination:
Is the fluid free of contamination? |
Go to Step 5 | Go to Step 4 |
| 4 | Flush the power steering system. Refer to Power Steering System Bleeding . Did you complete the procedure? |
Go to Step 13 | Go to Step 5 |
| 5 | Inspect the power steering gear for a whine or growl noise using J 39570
. Is the noise present at the power steering gear? |
Go to Step 9 | Go to Step 6 |
| 6 | Inspect the power steering pump for a whine or growl noise using J 39570
. Is the noise present at the power steering pump? |
Go to Step 10 | Go to Step 7 |
| 7 | Inspect the power steering hoses for a whine or growl noise using J 39570
. Is the noise present at the power steering hoses? |
Go to Step 11 | Go to Step 8 |
| 8 | Inspect the hydraulic brake booster for a whine or growl noise using J 39570
. Is the noise present at the hydro boost? |
Go to Step 12 | - |
| 9 | Replace the power steering gear. Refer to Steering Gear Replacement (Rack and Pinion) or Steering Gear Replacement (Non-Rack and Pinion) or Steering Gear Replacement (Two Mode Hybrid) . Did you complete the repair? |
Go to Step 13 | - |
| 10 | Replace the power steering pump. Refer to Power Steering Pump Replacement (4.8L, 5.3L, 6.0L, and 6.2L) . Did you complete the repair? |
Go to Step 13 | - |
| 11 | Adjust the routing of the power steering hoses. Did you complete the repair? |
Go to Step 13 | - |
| 12 | Diagnose the hydraulic brake booster. Refer to Diagnostic Starting Point - Hydraulic Brakes
. Did you correct the condition? |
Go to Step 13 | - |
| 13 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |