How do you replace spucks plugs 2001 Yukon Denali 6.0?

To replace the spark plugs on a 2001 Yukon Denali 6.0, start by disconnecting the negative battery cable for safety. Remove the engine cover and the ignition coil connectors, then unbolt and remove the ignition coils to access the spark plugs. Use a spark plug socket and ratchet to carefully unscrew the old spark plugs, then install the new plugs, ensuring they are properly gapped. Finally, reassemble the ignition coils, reconnect the battery, and start the engine to check for proper operation.