The Pontiac G6 typically uses a hydraulic power steering system that relies on automatic transmission fluid (ATF). For most G6 models, Dexron III ATF has been the traditional specification, with Dexron VI now widely accepted as a modern, backward-compatible replacement. Always verify the exact spec for your year and model by checking the reservoir label or the owner's manual.
Fluid specifications by year and configuration
Power steering fluid requirements can vary by year and whether the car uses hydraulic or electric assist. The following guidance covers the common configurations found in the G6 lineup, and emphasizes confirmation from official sources when possible.
Below are the fluids most commonly recommended for the Pontiac G6's hydraulic power steering systems. The exact specification can depend on the model year and engine; use the guidance to narrow to Dexron III or Dexron VI.
- Dexron III ATF (GM Dexron II/III) — This has been the traditional specification for many G6s built earlier in the model run. It provides the necessary lubrication and viscosity for the steering gear seals and components.
- Dexron VI ATF — GM's newer specification intended to replace Dexron II/III on many newer vehicles. It is backward compatible with Dexron II/III systems and is widely accepted for GM power steering. If your reservoir label or owner’s manual allows Dexron VI, it’s a solid modern choice.
- Do not use non-GM ATFs intended for manual transmissions, Type F, or ATFs like Chrysler ATF+4 in a GM power steering system, as these can degrade seals and performance.
In short, Dexron III is the historical standard for older G6s, while Dexron VI is broadly approved as a modern, compatible replacement. Always confirm with your owner’s manual or a GM dealer to avoid a mismatch.
How to check and replace the power steering fluid
Before checking or topping off the power steering fluid, ensure the vehicle is on a level surface and the engine is cool. Use only the recommended ATF to prevent damage or improper performance. If you’re unsure, consult a qualified technician.
- Identify the correct fluid specification for your model year by checking the reservoir cap label or the owner's manual. If the cap is unreadable, refer to GM’s guidelines for Dexron II/III and Dexron VI compatibility.
- Locate the power steering reservoir under the hood. The cap often reads “DEXRON” or “Power Steering Fluid.” If the cap is missing or illegible, refer to the manual or a dealer.
- With the engine off, check the fluid level on the dipstick or the reservoir’s level marks. If low, add the appropriate Dexron III or Dexron VI to bring the level to the “FULL” mark.
- Start the engine and slowly turn the steering wheel from lock to lock to circulate the fluid and remove any trapped air. Check for smooth operation and look for leaks around hoses and the steering rack.
- If the level drops quickly after topping off, there may be a leak in the system. Have the vehicle inspected by a professional to locate and repair any leaks.
Note: Do not flush the system yourself unless you have proper equipment, and avoid mixing different ATF generations in a sealed system. If in doubt, a professional service can perform a proper fluid exchange.
Common issues to watch for
Being aware of signs that the fluid type or condition is wrong can help prevent damage to the steering system. Look for these indicators and address them promptly.
- Noisy steering (whining or groaning) when turning
- Foamy or discolored fluid at the reservoir
- Stiff or jerky steering feel
- Visible leaks around hoses, rack and pinion, or the reservoir
If you notice any of these symptoms, verify the correct fluid type and level first, then have the system inspected if the issue persists.
Summary
The Pontiac G6 generally uses Dexron III ATF as the original power steering fluid, with Dexron VI widely accepted as a modern, compatible replacement. Always confirm the correct specification for your specific year and engine by checking the reservoir cap or owner’s manual. When topping off or changing fluid, use only the recommended ATF, avoid mixing fluids, and be alert to leaks or unusual steering feel. If you are unsure, seek professional service to ensure the system remains properly lubricated and sealed.
Does it matter which power steering fluid you get?
Yes, there is. Make sure you also check the service information for that on when it should be replaced, but just keep in mind that some vehicles, they have a unique formulation of power steering fluid.
What kind of brake fluid do I need for a 2007 Pontiac G6?
Prestone – MAX DOT 3 Brake Fluid: 12 oz. (Part No. AS415)
What power steering fluid does a Pontiac G6 use?
(Part No. AS261Y/1) Prestone Power Steering Fluid (PSF) delivers increased system life.
Does a 2008 Pontiac G6 take power steering fluid?
Maintaining the performance of your 2008 Pontiac G6 starts with choosing the right parts, and high-quality Power Steering Fluids help ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Power Steering Fluids specifically for the 2008 Pontiac G6, ensuring a perfect fit and lasting durability.