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Home/DTC Codes/GMC/Envoy/2002-2009 4.2L I6/P2769
P2769

Torque Converter Clutch Duty Cycle Not Understood

2002-2009 GMC Envoy 4.2L I6

Moderate SeverityPowertrainGeneric (SAE)

Description

The TCM cannot determine the correct duty cycle for TCC operation.

Symptoms

  • Check engine light
  • TCC shudder
  • Abnormal converter operation

Common Causes

  • TCM calibration issue
  • Input sensor fault
  • Solenoid performance issue

Diagnostic Steps

  1. Check input speed sensor
  2. Update TCM calibration if TSB exists
  3. Monitor TCC data

Repair Notes

Update TCM software. Replace solenoid if mechanical fault.

Related Codes

P2762Torque Converter Clutch Pressure Control Solenoid Control Circuit Low

Other Powertrain Codes

P2769 on Other Vehicles

GMC Acadia

2017-2024 2.5L I4

GMC Acadia

2017-2024 3.6L V6

GMC Canyon

2004-2012 2.8L I4

GMC Canyon

2004-2012 3.5L I5

GMC Canyon

2007-2012 2.9L I4

GMC Canyon

2007-2012 3.7L I5

GMC Canyon

2015-2022 2.8L I4 Duramax Diesel

GMC Canyon

2015-2022 3.6L V6

Common Questions

What does code P2769 mean on a 2002-2009 GMC Envoy?

P2769 stands for "Torque Converter Clutch Duty Cycle Not Understood". The TCM cannot determine the correct duty cycle for TCC operation.

What are the symptoms of P2769 on a GMC Envoy?

Common symptoms of P2769 include: Check engine light, TCC shudder, Abnormal converter operation.

What causes P2769 on a 2002-2009 GMC Envoy?

Common causes of P2769 include: TCM calibration issue, Input sensor fault, Solenoid performance issue.

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