For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC Sierra Denali 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Fluid Leaks from Transmission Input

Fluid Leaks from Transmission Input for GMC Truck GMC Sierra Denali 2006

Condition	Action
Torque converter seal leaks	Replace the torque converter seal. Refer to Torque Converter Fluid Seal Replacement .
Front support bolt seals leaking	Replace the bolt seals. Refer to Torque Converter Housing Bolt Seal Replacement .
Converter leaks	Inspect the converter seals, cracked converter pump tangs, converter cover, or converter housing porosity. Replace the parts as required.
Spin-on filter leaking	Replace the filter. Refer to Automatic Transmission Fluid and Filter Replacement .
Main pressure plug leak	Replace or torque the main pressure plug. Refer to Automatic Transmission Fluid Pressure Test Hole Plug Replacement .
Pump bushing shows excessive wear	Rebuild and repair the pump.