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The single most important thing to know about the Chevy Traverse: the correct transmission fluid depends on which transmission you have, and there are two very different fluids in play. Put the wrong one in and you get shudder, harsh shifts, and in the worst case a damaged transmission. This is not a case where any red ATF will do.
- First-generation Traverse (2009-2017) and early second-gen non-nine-speed builds use the 6T70 / 6T75 six-speed transaxle, which takes DEXRON-VI.
- Second-generation Traverse (2018-up) in most trims uses the 9T65 nine-speed transaxle, which takes DEXRON-HP (Hybrid Performance), a different, higher-spec fluid.
Confirm your transmission before you buy a drop of fluid. The RPO code on the glovebox or door-jamb sticker tells you: MH2/MH4 point at the six-speed family, M3D/M3H at the nine-speed. When in doubt, decode the VIN or check the RPO list.
DEXRON-VI vs. DEXRON-HP — They Are Not Interchangeable
DEXRON-VI is GM's long-standing full-synthetic six-speed fluid. It has been the standard for the 6T and 6L family transmissions for well over a decade. It is backward-compatible with older DEXRON-III applications, which is why people assume it fits everything. It does not fit the nine-speed.
DEXRON-HP was developed specifically for the newer nine-speed and ten-speed GM transmissions (9T and 10L families). It has a different friction profile and viscosity package tuned for those units' clutches and higher operating pressures. Running DEXRON-VI in a 9T65 that calls for HP can cause converter clutch shudder and abnormal shift feel, and running it long term is not something you want to gamble a nine-speed on.
| Transmission | Years (Traverse) | Correct Fluid |
|---|---|---|
| 6T70 / 6T75 (6-speed) | 2009-2017 (and some early 2018 carryover) | DEXRON-VI full synthetic |
| 9T65 (9-speed) | 2018-present | DEXRON-HP (Hybrid Performance) |
Do not top off a nine-speed with DEXRON-VI because it is what was on the shelf. Buy the fluid that matches your transmission, full stop.
Which Fluid to Buy
For the 6T70 / 6T75 (DEXRON-VI)
Any fluid licensed to the DEXRON-VI specification meets GM's requirement. GM's own bottle (ACDelco) is the safe default, and reputable brands like Valvoline, Mobil 1, and Castrol sell licensed DEXRON-VI that meets the same spec. Look for the DEXRON-VI license number on the label, not just the words "for use in DEXRON-VI applications," which is marketing language for a fluid that may not be licensed.
Shop DEXRON-VI fluid
For the 9T65 (DEXRON-HP)
The nine-speed needs genuine DEXRON-HP. ACDelco DEXRON-HP is the reference fluid. This one is less commonly stocked at parts counters than plain DEXRON-VI, so buy it deliberately rather than grabbing whatever red fluid is on the shelf.
Shop DEXRON-HP fluid
Want the full breakdown on the difference between the two? See our companion guide: DEXRON-VI vs DEXRON-HP.
Capacities and Change Intervals
Both transmissions in the Traverse are sealed-style transaxles with no dipstick. You service them through a fill plug and set the level by fluid temperature, not by counting quarts. The numbers below are approximate; verify against your service data.
| Spec | 6T70 / 6T75 | 9T65 |
|---|---|---|
| Total dry fill | ~9.5-10 qt (~9-9.5 L) | ~9.5-10 qt (~9-9.5 L) |
| Drain-and-fill (pan) | ~5-6 qt | ~5-6 qt |
| Fluid | DEXRON-VI | DEXRON-HP |
| Level-set temp window | ~85-113 F (~30-45 C) | ~85-113 F (~30-45 C) |
GM lists these transmissions as "fill for life" under normal use, but that assumes an owner who never tows and never sits in traffic. Real-world interval: change the fluid every 45,000 to 60,000 miles, and sooner (every 30,000) if you tow, live somewhere hot, or do a lot of stop-and-go. Fluid is cheap. A 6T70 or 9T65 rebuild is not.
Symptoms of the Wrong or Worn-Out Fluid
- Torque converter shudder. A vibration or shimmy at light throttle around 30-50 mph, often felt as the converter clutch tries to lock. The 6T family is notorious for this when the fluid is old or wrong. Fresh, correct fluid frequently cures an early shudder.
- Harsh or delayed shifts. A bang into gear, a flare between gears, or a long pause before the transmission engages Drive or Reverse.
- Slipping. Engine RPM rises without matching acceleration, especially under load or on a grade. This is worn friction material or degraded fluid failing to hold clutch apply pressure.
- Overheating. Old or wrong-viscosity fluid does not carry heat away as well, and the transmission runs hotter, which accelerates the damage.
- Dark or burnt-smelling fluid. Healthy DEXRON is clear red. Brown, murky, or burnt-smelling fluid means it has broken down and needs to come out now.
If you have shudder on a Traverse, the correct fluid is the first thing to try before anyone starts talking about a rebuild. It is the cheapest possible fix and it works more often than people expect.
Drain-and-Fill vs. Flush
There are two ways to change this fluid, and they are not equal.
Drain-and-Fill (recommended for most owners)
You drain what comes out of the pan (roughly 5-6 quarts), replace it with the same amount of fresh fluid, and set the level warm. Because the torque converter and cooler hold fluid that does not drain, a single drain-and-fill exchanges maybe half the total. The smart move on a neglected transmission is a series of drain-and-fills: do one, drive it a few hundred miles, do another, and a third if the fluid is still dark. Each pass dilutes the old fluid further without shocking the transmission.
Flush (machine exchange)
A cooler-line flush machine pushes nearly all the old fluid out and replaces it in one shot. The upside is a complete exchange. The downside is that a high-pressure flush on a high-mileage transmission that has never been serviced can dislodge debris and varnish and cause a failure that gets blamed on the flush. If the fluid has never been changed and has a lot of miles, do staged drain-and-fills instead of a hard flush. On a transmission that has been maintained, a flush is fine.
Rule of thumb: maintained transmission, flush is okay. Neglected high-mileage transmission, do drain-and-fills. Either way, use the correct fluid for your specific transmission and set the level by temperature, not by guesswork.
Fluid, Filters, and Pan Gaskets? Ships Same-Day
Our companion shop gearboxinsider.com stocks DEXRON-VI, DEXRON-HP, 6T70/6T75 and 9T65 filters, pan gaskets, and the seals you need to service the Traverse right. Same-day ship before 2pm Eastern.
Shop Gearbox Insider →FAQ
Can I use DEXRON-VI in my 2020 Traverse nine-speed?
No. The 9T65 nine-speed calls for DEXRON-HP. DEXRON-VI can cause converter shudder and abnormal shifts in that transmission. Use the fluid that matches your transmission.
Is DEXRON-HP backward compatible with the six-speed?
GM lists DEXRON-HP as suitable for many earlier DEXRON-VI applications, but the safe, spec-correct answer for a 6T70/6T75 is DEXRON-VI. Do not create confusion. Use VI in the six-speed, HP in the nine-speed.
How do I know which transmission my Traverse has?
Check the RPO code on the glovebox or door-jamb label. Six-speed builds carry codes like MH2/MH4; the nine-speed carries M3D/M3H. Model year is a good first clue: 2009-2017 is the six-speed, 2018-up is usually the nine-speed.
Do I really need to change it if GM says fill-for-life?
Yes. "Fill for life" assumes an ideal duty cycle. In the real world, changing the fluid every 45,000 to 60,000 miles (sooner if you tow or drive in heat) is the difference between a transmission that lasts and one that shudders itself to death.