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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1738 (Automatic Transmission - ALLISON - Symptom Troubleshooting And Diagnosis) >> Contaminated Transmission Fluid

Contaminated Transmission Fluid

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
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.