Sierra 3500 4WD V8-8.1L VIN G (2006)
2. Install the engine block heater into the block.
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Tighten the coolant heater to 60 Nm (40 ft. lbs.).
3. Notice: The heater cord must not touch the engine, hot pipes, manifold, or any moving parts. Route the cord to the left front of the engine
compartment securing with tie straps as necessary to prevent damage.
Connect the block heater cord to the block heater.
4. Fill the cooling system.