Thermostat Removal & Installation

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

THERMOSTAT REPLACEMENT (4.3L ENGINE)THERMOSTAT REPLACEMENT (6.6L (LB7) ENGINE)THERMOSTAT REPLACEMENT (6.6L (LLY) ENGINE)THERMOSTAT REPLACEMENT (8.1L ENGINE)