P0744Gmc TerrainYears: 1996 - 2026
Torque Converter Clutch Circuit Intermittent
Reviewed by ASE Certified Technician
What does this mean?
Code P0744 indicates a problem with the torque converter clutch circuit.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Gmc Terrain models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty torque converter or lockup clutch
Low, dirty, or burnt transmission fluid
Faulty transmission shift solenoid
Worn or faulty transmission valve body
Damaged, chafed, or broken wiring harness
Symptoms to Watch For
- Check Engine Light is illuminated
- Engine stalling or dying unexpectedly
- Unusual vibration during driving
- Decreased fuel economy
- Transmission slipping between gears