Symptoms:
- Solenoid electrical circuit faults
- Solenoid performance codes
- Gear ratio codes
- Poor shift quality
- TCC codes
- Internal memory codes
- Temperature sensor codes
Cause:
Internal component failure or circuit faults within the TEHCM creates no or poor communication with the onboard TCM, resulting in poor shift quality and numerous diagnostic trouble codes.Correction:
Install a remanufactured Sonnax TEHCM that has been thoroughly cleaned and updated with new components where necessary and electro-hydraulically tested for OE performance in a simulated drive test.Warning:
You must use the TEHCM OE part numbers to identify Gen. 2 versus Gen. 3. See web image for reference.
6T30 (Gen. 2) | 6T40 (Gen. 2) | 6T45 (Gen. 2) | 6T50 (Gen. 2)
Remanufactured TEHCM
Part No. GM6T40-G2-TEHCM
Typically fits GMC 2012–2013, Buick 2012–2017 and Chevrolet 2012–2013.
OE Part No. 24041960, 24252577, 24260642, 24262069, 24264425, 24265367, 24265789, 24275863, 24287424, 24041961, 24041862, 24267723, 24268164, 24275864, 24287425, 24291305, 24052395, 24264425, 24285011, 24288611
View Instructions Find a DistributorThe GM 6T30/40/45/50 (Gen. 2) TEHCM houses the transmission control module (TCM) and solenoids. Component failures and circuit faults in the TEHCM are common and result in drivability complaints and trouble codes which can only be remedied with a replacement unit.
Sonnax remanufactured TEHCM GM6T40-G2-TEHCM delivers durable, reliable OE performance at a significant savings over an OE replacement. Each unit goes through a rigorous cleaning and inspection process where all failed components are replaced. Electro-hydraulic testing in a simulated drive test ensures full functional performance consistent with a new OE TEHCM. A vehicle VIN remains on the Sonnax remanufactured TEHCM, and will be overwritten by the transmission shop technician with the new vehicle VIN during the reprogramming process. After installation, this remanufactured TEHCM must be reprogrammed on the vehicle using a J2534 device in order to function correctly.
The fully tested TEHCM is serialized, and the test data stored and packaged in mylar bag with a protective connector cover to prevent inadvertent static discharge issues during the shipping, handling and receiving processes.
- Ultrasonically cleaned
- New filter plate/screen and full set of new OE solenoids included
- Fully electro-hydraulically tested to comply with OE performance
- Must be reprogrammed after installation using a J2534 device for proper function
Sonnax TEHCMs have "Sonnax" lasered on the TCM cover for quality assurance purposes. Sonnax TEHCMs are serialized with a unique number, and the data from each TEHCM during its final testing is stored for future review. Please log your serial numbers as this will help with any diagnostic questions you may have. See web image for reference.
- Remanufactured TEHCM
- Filter Screen
Related Sonnax Parts
Required
Recommended
Required
Recommended
Required
Recommended
6T30 (Gen. 1) • 6T30 (Gen. 2) • 6T31 (Gen. 3 6T40) • 6T35 (Gen. 3 6T40) • 6T40 (Gen. 1) • 6T40 (Gen. 2) • 6T41 (Gen. 3 6T40) • 6T45 (Gen. 1) • 6T45 (Gen. 2) • 6T46 (Gen. 3 6T40) • 6T50 (Gen. 1) • 6T50 (Gen. 2) • 6T51 (Gen. 3 6T40)
Oversized Actuator Feed Limit Valve 144740-01
-
Helps cure:
- No 4th
- No 5th
- No 6th
- Low clutch oil pressure
- Harsh shifts
- Flare shifts
Required
Recommended
6T30 (Gen. 1) • 6T30 (Gen. 2) • 6T31 (Gen. 3 6T40) • 6T35 (Gen. 3 6T40) • 6T40 (Gen. 1) • 6T40 (Gen. 2) • 6T41 (Gen. 3 6T40) • 6T45 (Gen. 1) • 6T45 (Gen. 2) • 6T46 (Gen. 3 6T40) • 6T50 (Gen. 1) • 6T50 (Gen. 2) • 6T51 (Gen. 3 6T40)
Oversized TCC Regulator Valve Kit 144740-16K
-
Helps cure:
- Code P0741, P0742
- No lockup
- TCC slip
- Loss of fuel economy
- Low TCC apply pressure
- Overheated fluid & TCC lining
- Harsh TCC apply
Required
Recommended
6T31 (Gen. 3 6T40) • 6T35 (Gen. 3 6T40) • 6T41 (Gen. 3 6T40) • 6T46 (Gen. 3 6T40) • 6T51 (Gen. 3 6T40)
Remanufactured TEHCM GM6T40-G3-TEHCM
Required
Recommended
Required
Recommended
Required
Recommended
Required
Recommended
