The 2012 Buick Enclave uses Dexron VI automatic transmission fluid (ATF) as its power steering fluid. Use Dexron VI or a GM-approved equivalent; avoid non-ATF steering fluids.
GM’s service information for this model year specifies Dexron VI ATF as the correct specification for the power steering system. Dexron VI is backward-compatible with older Dexron formulations and is the current GM standard for power steering in many vehicles from this era. If Dexron VI isn’t available, consult a GM dealer or qualified mechanic for an approved alternative and a potential system flush, but do not mix fluids or use engine oil or other non-Dexron VI fluids.
Fluid specification
Here is what you need to know about choosing and using the right fluid for the 2012 Enclave's power steering system:
- Dexron VI ATF is the recommended fluid for the Enclave's power steering system.
- GM-approved equivalents that meet the Dexron VI specification are acceptable (e.g., Castrol Transmax Dexron VI, Valvoline Dexron VI ATF, Mobil 1 Dexron VI ATF).
- Older Dexron formulations (Dexron II/III) are generally not preferred, but Dexron VI is backward-compatible and preferred if a change was previously made to Dexron II/III.
- Do not use non-ATF steering fluids or engine oils in the power steering reservoir.
In practice, keep to Dexron VI ATF to maintain proper pump lubrication and steering feel. If you experience steering noise or hard spots, have the system inspected for leaks or pump failure; do not drive long distances with a low PS fluid level.
Maintenance tips
To maintain performance, follow these steps when checking or refilling the fluid:
- Check the PS reservoir level on a level surface with the engine off and the cap clean; the level should be between the min and max marks. If low, add Dexron VI ATF gradually until within range.
- If you must replace the fluid, consider a complete power steering flush to avoid old fluid mixing with new Dexron VI, which can cause foaming or poor performance.
- Inspect for leaks around the reservoir, hoses, and pump; leaks can lead to fluid loss and steering problems.
Note: If you are unsure about the process, have a certified mechanic perform the service. The power steering system is critical for safe vehicle operation, and incorrect fluid or a poor flush can cause damage.
Summary
For the 2012 Buick Enclave, the recommended power steering fluid is Dexron VI automatic transmission fluid, or a GM-approved Dexron VI ATF equivalent. Use only fluids that meet or exceed Dexron VI specifications, and avoid mixing with non-ATF fluids. When in doubt, consult the owner's manual or a GM service specialist.