6T75 Solenoid Kit, remanufactured and ready to install. Fits the 6T75. Ships fast from the USA.
The 6T75 is the heavy-duty member of GM's six-speed front-drive family, and it is the transaxle most owners of a GMC Acadia, Saturn Outlook, Buick Enclave or Chevrolet Traverse are driving when the scan tool starts listing solenoid performance codes. If your crossover has dropped into a single gear, bangs into Drive from Park, or flares between shifts after a long tow, this is the part most of those complaints lead back to. The listing name says solenoid kit, but what ships is the complete remanufactured TEHCM: the control solenoid body with its solenoids and the transmission control module built in, plus the sealed pass-through connector that the vehicle harness plugs into.
ATRA's training material on this family describes a transmission with no shift valves in the traditional sense. Every gear change is clutch-to-clutch, and the internal TCM decides the moment one clutch releases and the next one applies. It does that through two on/off shift solenoids, which steer the clutch select valves, and six variable bleed pressure control solenoids. One of those sets line pressure for the whole unit; the others each control the apply pressure of a single clutch. On the 6T75 the hard parts are beefier than in the 6T70 - ATRA lists a shot-peened output carrier, a five-pinion carrier, a wider transfer gear, a heavier differential carrier and a ribbed case, with a tow rating of 4,500 lb against 1,000 lb for the lighter unit. The control assembly has the same job in both, but in a 6T75 it is managing more torque and more heat, which is why clean, precisely regulated pressure matters so much here.
Several 6T75 faults look electrical and are not. ATRA documents a 3-4 or 4-3 bind with P0797 caused by a worn ring groove on the rear case cover hub, which leaks between the 3-5-Reverse and 4-5-6 clutch circuits. A broken 3-5-Reverse wave plate on early units sets P0776 and takes away reverse, third and fifth. Neither is fixed by a new control assembly. Scan every code, check the fluid hot, and put a gauge on the line pressure tap to compare commanded against actual. Our shift solenoid symptoms guide ties each solenoid to the clutch and gear it controls, and the common problems guide covers the mechanical failures to rule out first.
This is the general 6T75 listing with no year attached, so match it to your vehicle before ordering. ATRA lists the 6T75 under GM's truck RPO codes MH6 and MY9, and the 2013 control system update reached the 6T75 under RPO M7V and M7X first, with other applications not updated until 2014 production. That means first- and second-generation 6T75 units overlap in 2013. Sonnax warns that a Gen 2 module will not work properly in a Gen 1 build even when the old part number seems to match. Find the M-series transmission code on the Service Parts Identification label in the glove box and send it with your year and VIN, and we will confirm the correct generation. Every part for this family is on our 6T70 and 6T75 collection page.
If diagnosis turns up worn clutches behind the electrical fault, a 6T75 overhaul kit lets you refresh the friction side on the same teardown, and a 6T75 valve body covers scored bores under the assembly.
| Fits | 6T75 |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is the complete remanufactured TEHCM: the solenoid body with its solenoids and the built-in transmission control module, as shown in the photo. The solenoids are not serviced separately on this transmission.
The 6T75 is the heavy-duty version, with a shot-peened output carrier, five-pinion carrier, wider transfer gear, heavier differential carrier and ribbed case. ATRA lists a 4,500 lb tow rating for the 6T75 versus 1,000 lb for the 6T70.
Units before 2013 are first generation. In 2013 some 6T75 applications (RPO M7V and M7X) got the second-generation controls and others did not until 2014 production. Send your RPO code, year and VIN and we will confirm.
Yes. Program it to your VIN with a J2534 pass-thru device or dealer tool, then perform the Service Fast Learn adapt procedure and drive to complete the clutch fill learn.
Dexron VI automatic transmission fluid, checked hot with the engine running.
