The radiator drain plug is the easiest to access. It's usually located at the bottom of the radiator, often a bolt or plug that you can unscrew to drain the coolant.
The engine block drain plug (if present - not all engines have one) is more difficult to reach and usually requires more work to access. It’s typically located lower on the engine block. You'll need to consult a repair manual specific to your 1996 Chevy Tahoe with the 350 engine for its exact location.
Before attempting to drain coolant:
* Consult a repair manual: A Haynes or Chilton manual for your specific year and model will give you precise locations and instructions. This is highly recommended to avoid damaging your engine.
* Let the engine cool completely: Hot coolant can cause severe burns.
* Place a drain pan under the drain plug(s) to catch the coolant.
* Be prepared to dispose of the coolant properly. It's toxic and shouldn't be dumped down the drain or on the ground.
Remember, working on your vehicle can be dangerous. If you're not comfortable performing this task, take it to a qualified mechanic.
