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Yukon Denali
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Section 499 (Automatic Transmission - 4L80-E/4L85-E (Troubleshooting))
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Troubleshooting
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Soft Torque Converter Clutch (TCC) Apply
Soft Torque Converter Clutch (TCC) Apply
WARNING:
This page is about a different car, the 2004 GMC Yukon XL, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Soft Torque Converter Clutch (TCC) Apply
Checks
Cause
Turbine Shaft Seals (501)
Ineffective
Pump Body Bushing (202)
Worn
O-ring (2)
Heat set
Oil Transfer Hole Cup Plug
Leaking
TCC Solenoid (323)
Malfunction
Fluid
Low pressure