ease of water pump replacement on 2005 Buick LaCrosse

back in nov, had no heat, i took it to the dealer and was told that the heater core was plugged. they flushed the system and it worked great for a couple months, then same problem, now it apears that the water pump is leaking, and no heat

1 answer
no heat because coolant level is low because of leak......replace the water pump....problem solved