Cleaning Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Do not use a caustic solution to clean the aluminum engine block.
IMPORTANT:
When cleaning the engine block in a thermal type oven, do not exceed 232°C (450°F).
Clean the following components:
- Remove all sludge, dirt, or debris using a cleaning solvent or thermal type oven. Refer to Cleanliness and Care .
- Gasket surfaces
Refer to Replacing Engine Gaskets .
- Coolant passages
- Oil galleries
- Main bearing caps
- Cylinder head bolt holes to remove threadlocking material
Thread repair tool J 42385-107 may be used to clean the threads of any residual threadlocking material.