6T70 Valve Body

This is our general 6T70 valve body listing for buyers who are not yet sure which exact casting their vehicle needs, or who are comparing before they commit to one of our narrower year-specific listings. The 6T70 ran from 2007 through 2019 across the Chevrolet Malibu, Equinox and Impala, GMC Terrain, Buick LaCrosse and Cadillac SRX, and GM revised the valve body several times over that run, most significantly with the 2013 split into Generation 1 and Generation 2 control hardware. Buying the wrong casting means a unit that bolts up physically but does not talk to your computer correctly, so we confirm the exact revision against your year, RPO code or VIN before this ships rather than guessing from the model name alone.

What the valve body does in a 6T70

The 6T70 has no mechanical shift valves; it is a clutch-to-clutch automatic, which means the valve body alone decides which clutch pack or band gets line pressure and when. On every production year it also carries the pressure-control and shift solenoids the transmission control module uses to time shifts and lock the torque converter clutch. A worn valve body loses the ability to hold pressure cleanly in those bores, and the symptom shows up as a shift quality problem long before the transmission actually slips a gear ratio.

Symptoms this part addresses

• Harsh, late or flared shifts, often worse once the fluid is hot
• Torque converter clutch shudder or slip at light throttle and highway speed
• Hesitation or a delay before the transmission engages drive or reverse
• Limp mode with a stored pressure-control, shift-solenoid or ratio code

Confirming the fault, and which casting you need

Pull any stored codes before ordering. Our 6T70 valve body symptoms and testing guide breaks the complaint down by which specific valve is the likely cause, and our 6T70 common problems and fixes guide covers the broader list of failures on this transmission, including ones that mimic a bad valve body but trace back to the wave plate or a pressure switch instead. Tell us your model year when you order, or send your VIN - we carry dedicated listings such as our 6T70 valve body 2013 listing, which resolves the RPO-based Gen 1/Gen 2 split for that specific transition year, and our 6T70 valve body 2013-2017 listing for the settled Gen 2 run.

Fitment across the 6T70 run

Because this listing spans the full 2007-2019 production life of the 6T70, treat the model name alone as a starting point, not a guarantee. The casting, separator plate, exhaust ports and solenoid connector changed across that span, and running the wrong revision in your computer will not throw a check-fit error, it will throw a drivability problem. Browse the 6T70/6T75 parts collection for every year-specific listing we carry if you already know your exact year.

Install notes

Change the fluid and filter at the same time as the valve body so debris from the failed unit is not pulled back through the new one, and torque the retaining bolts in GM's specified sequence. Refill with Dexron VI ATF only, and run the TCM's adaptive relearn drive cycle after the install rather than driving normally right away. If your complaint also involves slow or rough engagement into first gear, pair this with a 6T70 filter and pan gasket kit rather than reusing the old filter on a new valve body.

How do I know which 6T70 valve body revision I need?

Tell us your model year or send your VIN when you order. GM revised the valve body several times across the 2007-2019 production run, most significantly at the 2013 Gen 1/Gen 2 control-system split, so we confirm the exact casting before this ships.

What vehicles use the 6T70?

The 6T70 was used in the Chevrolet Malibu, Equinox and Impala, GMC Terrain, Buick LaCrosse and Cadillac SRX, generally from 2007 through 2019 depending on the model.

What symptoms point to a bad valve body?

Harsh, late or flared shifts, torque converter clutch shudder or slip at light throttle, hesitation engaging drive or reverse, and limp mode with a stored pressure-control, shift-solenoid or ratio code.

Should I buy this general listing or a year-specific one?

If you already know your exact model year, our year-specific listings such as the 6T70 valve body 2013 or 2013-2017 versions ship faster. This general listing is for buyers who need us to confirm the revision first.

What fluid does the 6T70 use?

Dexron VI ATF only. Change the fluid and filter at the same time you install the valve body.

What else should I check if a valve body does not fix the shift problem?

A worn pressure switch, a weak pump, or a broken 3-5-R wave plate can all produce similar shift complaints. Our 6T70 common problems and fixes guide covers the full list of failure points on this transmission.

• 6T70 Valve Body Symptoms and Testing: Which Valve, Which Complaint
• 6T70 Common Problems and Fixes