The TCC solenoid, or torque converter clutch solenoid is responsible for engaging the lockup clutch that locks the engine in transmission into a 1:1 drive ratio. If the TCM is having problems controlling this vital component, then a P1833 diagnostic trouble code will be stored. This DTC is common in General Motors vehicles.
How Serious is the Code?
The P1833 OBD2 diagnostic trouble code is actually pretty serious, because if the torque converter clutch remains the locked position when it is not supposed to, serious drivability issues like stalling and getting stuck in a gear can occur.
Symptoms of a P1833 include:
- Harsh gear changes
- Delayed gear changes
- Erratic shifting
- Engine stalling
- Transmission shaking when coming to a stop or accelerating
- Getting stuck in a gear
- Vehicle will not move when it is in gear
- Transmission overheating
- Reduced fuel economy
- Check engine light
- Low transmission fluid level
- Dirty transmission fluid
- Damaged wiring and/or connector
- Failed torque converter clutch solenoid/TCC solenoid
- Failed torque converter clutch and/or assembly
- Clogged hydraulic passages
- Valve body issues
How to Diagnose the Code?
The first thing the mechanic should look for is dirty transmission fluid, as this can prevent this solenoid from working correctly. Next, any relevant wiring and connectors should be examined for signs of damage and corrosion. If no issues are present, then the TCC solenoid will need to be tested.
What Repairs Will Fix P1833?
- Change transmission fluid/filter
- Repair wiring and/or connectors
- Install new torque converter clutch solenoid
- Install new TCC clutch and/or assembly
P1834 OBD-II Trouble Code: GM – TCC Solenoid Power Control Circuit High Voltage