Yes. The 2006 Chevy HHR uses a hydraulic power steering system that requires an ATF-based power steering fluid, typically Dexron II or Dexron III (often sold as GM Power Steering Fluid). Do not use engine oil or other non-approved fluids. If your vehicle has a hydraulic system, refer to the cap or manual for the exact specification.
Fluid type and compatibility
The HHR’s power steering system is designed for automatic transmission fluid (ATF) used as power steering fluid. The common references in GM documentation point to Dexron II or Dexron III ATF, or GM Power Steering Fluid (which is of the same Dexron II/III type in practice). Using the wrong fluid can impair steering performance and damage seals.
Note that Dexron VI is used in some newer GM applications, but for the 2006 HHR the recommended fluids are Dexron II or Dexron III ATF (or GM Power Steering Fluid) unless your owner’s manual or under-hood label explicitly approves otherwise.
Before you fill, confirm the specification by checking the reservoir cap or the owner's manual. If in doubt, contact a GM dealer or a qualified mechanic for the exact fluid requirement for your vehicle’s build date and engine/trim.
Common fluid options for the 2006 HHR power steering system include:
- Dexron II ATF
- Dexron III ATF
- GM Power Steering Fluid (which is a Dexron II/III-type fluid)
Using Dexron VI or other ATFs not specified by GM for this model can lead to improper performance or component wear. Always verify with the cap label or official documentation before filling.
How to check and refill safely
To check the level and top up the power steering fluid, follow these practical steps:
- With the engine off, locate the power steering reservoir under the hood and inspect the level against the MAX/MMIN marks on the cap or reservoir.
- If the level is below the minimum mark, add the recommended fluid gradually until it reaches the proper level—do not overfill.
- Use Dexron II/III ATF or GM Power Steering Fluid as indicated by the reservoir cap or manual.
- With the engine running, gently turn the steering wheel from lock to lock several times to circulate the fluid and bleed any air, then recheck the level and adjust if needed. Replace the cap securely.
Following these steps helps maintain proper steering performance and prevents air entrapment or seal damage. If you notice ongoing leaks, whining sounds, or stiff steering, seek professional service.
Where to find official guidance
Consult the owner's manual for the 2006 HHR, specifically the power steering section and the under-hood label on the reservoir cap. If the manual is unavailable, contact a GM dealer or reference the service/repair manual for the 2006 HHR to confirm whether Dexron II/III ATF or GM Power Steering Fluid is required for your exact build. Some vehicles may have slight variations by production date or trim.
Summary
The 2006 Chevy HHR relies on a hydraulic power steering system that uses Dexron II or Dexron III ATF-based power steering fluid (often labeled GM Power Steering Fluid). Always verify the exact specification on the reservoir cap or in the owner's manual, and avoid using engine oil or fluids not approved for GM PS systems. Proper checking, topping up, and bleeding help maintain smooth steering and protect system components.