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🔄 Don’t Replace, Rebuild: The Smart GM Transmission Fix
The Sonnax 12474030K Pressure Switch Rebuild Kit is a specialized repair solution for GM 6-speed transmissions, restoring internal TEHCM pressure switches to eliminate fault codes and shift issues. It offers a cost-effective alternative to replacing the entire TEHCM, requiring the Sonnax 124740-TL30 tool for installation. Compatible with multiple GM transmission models, this OE-spec kit extends transmission life and performance.
| ASIN | B0184HLDJM |
| Actuator Type | Plunger |
| Best Sellers Rank | #93,235 in Automotive ( See Top 100 in Automotive ) #39 in Automotive Replacement Oil Pressure Switches |
| Brand | Sonnax |
| Brand Name | Sonnax |
| Circuit Type | 1-way |
| Color | Black |
| Compatible Devices | GM vehicles with 6-speed transmissions (e.g., Chevrolet, GMC, Buick, Cadillac) |
| Compatible with Vehicle Type | GM 6-Speed Transmission Vehicles |
| Connectivity Protocol | X-10 |
| Connector Type | Plug In |
| Contact Material | Plastic |
| Contact Type | Normally Open |
| Control Method | App |
| Control Type | application |
| Customer Reviews | 4.7 out of 5 stars 87 Reviews |
| International Protection Rating | IP00 |
| Manufacturer | Sonnax |
| Material Type | Metal |
| Model | 12474030K |
| Mounting Type | PCB Mount |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operation Mode | ON-OFF |
| Part Number | 124740-30K |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | Oe |
| Switch Type | Pressure Switch |
| Terminal | Through Hole |
| Unit Count | 1.0 Count |
R**Y
Great kit
The tcm was priced at 896.00 at the local auto parts store. This kit fixed my tcm for pennies on the dollar
N**O
6l80 transmission
Worked great for my 6l80 2007 escalade. First hole i did i came out with a crease in it lucky i had extra ones. The best way for me was to insert them like if you had a bowl upside down & just go around pushing it down. Watch
M**L
Price was right
Amazon was $60 cheaper than my local parts store. I couldn’t go wrong. Shipping took about four days and install took about seven hours.
F**D
OEM or better.
It is the equivalent of oem if not better. Fixed my issue that I was having on my 6l80 transmission from my Escalade.
A**Y
Great Kit
This really helped improve the shifting on my 2015 Chevrolet Impala Limited LTZ. I checked the RPO codes in the trunk of the car to verify that I had a Generation 1 6t70 transmission. The kit was relatively easy to install. It took the better part of an afternoon.
R**S
fix the proplem
good product
B**L
Saved big money considering the alternative
Worked perfectly for my GM 6T70 trans. If purchasing be sure to buy the installation tool kit. Can't say enough about Sonnax for coming up with this. Worked like a charm. Kudos....big time.
J**.
Verify item condition before starting job
This is the brand everyone in the forums say to use, however make sure you inspect your kit before doing the job. I had my car all torn apart only to find out all of the rubber seals except for one were torn.
Trustpilot
4 days ago
2 months ago