They're located in the engine block, typically on the sides. There's no single easily accessible location; their exact position varies slightly depending on the specific casting of the engine block. To find them, you'd need to:
* Consult a repair manual: A Haynes or Chilton manual specific to your 1997 GMC Jimmy 4.3L will have diagrams showing the exact locations of the freeze plugs. This is the most reliable method.
* Visually inspect the engine block: Look closely at the sides of the engine block, particularly near the cylinder walls and lower areas. Freeze plugs are usually circular and slightly recessed. However, you'll likely need a good light and possibly some cleaning to see them clearly.
Important Note: Unless you're specifically working on replacing a freeze plug, there's generally no need to locate them. They rarely cause issues unless damaged or corroded. If you are working on a repair that involves the block, then the repair manual is essential for precise locations.
