Power Steering Zipper/Grinding Noise at Start Up During Cold Temperatures (Replace Power Steering Reservoir)
| Subject: | Power Steering Zipper/Grinding Noise at Start Up During Cold Temperatures (Replace Power Steering Reservoir) |
| Models: | 2007 Pontiac G6 |
| 2007 Saturn AURA |
| with 3.6L Engine (VIN Code 7 -- RPO LY7) |
Model | VIN Breakpoint |
|---|---|
AURA | 7F171102 |
G6 | 74173000 |
Condition
Some customers may comment on a zipper/grinding type noise coming from the engine compartment or power steering pump at initial start up during cold temperatures, usually below 10°F (12°C). This noise may last for approximately 20 minutes.
Cause
When the power steering fluid is cold, it may be pulled out of the reservoir quicker than it can be put back in. This may cause the inlet pipe in the reservoir to become uncovered, allowing air to be pumped into the power steering system. No effect on steering performance has been noted.
Correction
Verify that the power steering reservoir is filled with fluid. If it is, then replace the power steering reservoir with P/N 25780649. This new reservoir has an inlet pipe with a different configuration to reduce the possibility of air being drawn into the system. Follow the Remote Power Steering Fluid Reservoir Replacement procedure in SI.
Important: After installation, noise may still be possible with the new reservoir until trapped air has circulated through the system and been released through the reservoir vent.
Parts Information
Part Number | Description |
|---|---|
25780649 | Reservoir, Power Steering Fluid |
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
E9070 | Reservoir and/or Seal, Power Steering -- Replace | 0.6 hr* |
*This time is updated from the current Labor Time Guide. The next update of the Labor Time Guide will contain this change. | ||
