2017 Chevrolet Equinox Transmission Fluid & Service Guide

Quick Answer

• Transmission Make/Model: General Motors 6T45 (MNH)
• OEM Fluid Spec: DEXRON-VI Automatic Transmission Fluid
• Drain & Fill Capacity: 4.2 quarts (approximate, for 2.4L engine) / 5.3 quarts (approximate, for 3.6L engine)
• Full Overhaul Capacity: 8.6 quarts (2.4L engine) / 9.5 quarts (3.6L engine)
• Filter OEM Part Number: Verify with dealer or service manual (typically not a regularly serviceable item for drain & fill)
• Recommended Service Interval: Inspect at 50,000 miles, change at 100,000 miles under normal conditions, or sooner for severe duty.

Fluid Type Explained

The 2017 Chevrolet Equinox, depending on the engine, is equipped with the General Motors 6T45 automatic transmission. This transmission requires the use of DEXRON-VI Automatic Transmission Fluid. DEXRON-VI is a synthetic blend fluid designed to provide improved shift quality, reduced wear, and extended fluid life compared to older DEXRON specifications. It is crucial to use only DEXRON-VI fluid or an officially licensed equivalent that meets the DEXRON-VI specification. Using incorrect fluid can lead to premature transmission wear, poor shift performance, and potential transmission failure.

Always check your owner's manual for the most accurate and up-to-date fluid specifications for your specific vehicle configuration. There are many aftermarket fluids that claim to be compatible; however, for optimal performance and longevity of your transmission, using genuine ACDelco DEXRON-VI or a fluid explicitly licensed and approved as DEXRON-VI is highly recommended.

Service Procedure

There are two primary methods for servicing transmission fluid: a drain and fill, and a full fluid exchange (sometimes called a flush).

Drain & Fill

A drain and fill involves removing the drain plug from the transmission pan, allowing the old fluid to drain out, and then refilling the transmission with new fluid to the correct level. This method only replaces a portion of the total transmission fluid, as a significant amount remains in the torque converter, valve body, and cooler lines. For the 6T45 transmission in a 2017 Equinox, a drain and fill typically replaces around 4.2 to 5.3 quarts, depending on the engine. While simpler and less expensive, it does not remove all contaminants or old fluid.

Full Fluid Exchange

A full fluid exchange, or "flush," involves using specialized equipment to actively pump new fluid through the transmission system while simultaneously removing the old fluid. This process replaces nearly all of the old fluid and contaminants, offering a more complete service. For the 2017 Equinox, a full fluid exchange would replace close to the entire 8.6 to 9.5 quarts of fluid. While more thorough, it is generally more expensive and should only be performed by a reputable mechanic using proper equipment and procedures. Some manufacturers advise against traditional pressure flushes, so always consult your owner's manual or a certified technician.

Important: The 6T45 transmission typically does not have a regularly serviceable external filter for a simple drain and fill. The internal filter is usually only replaced during a major transmission overhaul or repair. If you are experiencing shifting issues or abnormal transmission noise, consult a professional technician.

Service Interval

General Motors recommends inspecting the transmission fluid level and condition of the 6T45 transmission in the 2017 Chevrolet Equinox at 50,000 miles. Under normal driving conditions, the fluid should be changed at 100,000 miles. However, the service interval can be significantly shorter under severe duty conditions.

Severe Duty Conditions Include:

• Frequent towing or hauling heavy loads.
• Driving in mountainous or hilly terrain.
• Frequent stop-and-go driving, especially in hot weather.
• Operating as a police or taxi vehicle.

If your vehicle operates under any of these severe duty conditions, it is highly recommended to inspect and potentially change the transmission fluid more frequently, possibly every 45,000 to 50,000 miles, or as advised by your service manual or a qualified technician. Regular maintenance is key to prolonging the life of your transmission.

Common Transmission Problems (6T45 Generation)

While the 6T45 is generally a robust transmission, like any mechanical component, it can develop issues. For the generation of the 6T45 found in the 2017 Chevrolet Equinox, some common complaints or potential issues that owners have reported include:

• Harsh or Delayed Shifting: This can manifest as a noticeable jerk or hesitation when the transmission shifts gears. It could be due to low or degraded fluid, worn solenoids, or issues with the transmission control module (TCM).
• Slipping Gears: The engine RPMs may increase, but the vehicle doesn't accelerate proportionally, indicating that the transmission is slipping out of gear. This is often a sign of internal wear, low fluid pressure, or significant fluid degradation.
• Transmission Fluid Leaks: Leaks can occur from various points, such as the pan gasket, seals, or cooler lines. It