3L80 Transmission parts, repair guidelines, problems, manuals
TH375, TH400
Transmission general data
| Number of gears | Transmission Type | Drive | Torque (Nm) | ATF (full capacity) L | ATF (change) L | ATF type |
|---|---|---|---|---|---|---|
| 3 | AT | RWD | 340 | 12 | 5 | Dexron III |
3-speed automatic
gearbox THM (Turbo Hydromatic) 400, also named as 3L80). Turbo-Hydramatic is a
patented name for the family of automatic gearboxes designed and produced by GM.
What are you looking for?
Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor
Which cars run with this gearbox?
| Brand | Model | Year | Type | Engine |
|---|---|---|---|---|
| Chevrolet/GM | H1 HUMMER | 92 | 3 SP 4WD | V8 6.2L DIESEL |
Technical issues and repair guidelines
This gearbox 3L80 has a simple and reliable design. All parts are made of solid materials. Shifting of gears is implemented very smoothly and almost unnoticeable. The main disadvantages of this automatic transmission are significant dimensions and weight of the transmission. This transmission is considered to be the most reliable in the history of GM (the most enduring).
Instruction manuals and useful links Suggest your link
| Link type | Source | Description |
|---|---|---|
| www | Wikipedia | Super Turbine 400 / THM400 / THM375 / 3L80 / 3L80HD |
| Makcotransmissionparts | Transmission breakdown illustration | |
| drive.google.com | Repair manual 3L80 THM400 | |
| www | Sonnax | Setting Total Endplay to Prevent TH400 Gear Train Failure |