For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC Sierra Denali 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Contaminated Transmission Fluid

Contaminated Transmission Fluid for GMC Truck GMC Sierra Denali 2006

Condition	Action
Failure to change fluid and filters	Change the fluid and install new filters. Refer to Automatic Transmission Fluid and Filter Replacement .
Excessive heat	Inspect the cooling system for restrictions and proper capacity.
Substandard fluid	Use recommended fluid. Refer to Transmission General Specifications .
Clutch/transmission failure	Overhaul the transmission.