How do you drain radiator in 2004 gmc pickp?

To drain the radiator in a 2004 GMC pickup, first ensure the engine is cool and then locate the radiator drain valve at the bottom of the radiator. Place a drain pan underneath, open the valve to let the coolant flow out, and close it once drained. Alternatively, you can remove the lower radiator hose for a more complete drain. Always remember to dispose of the old coolant properly.