I just added about a gallon and a hlaf of coolant. It doesnt overheat anymore, and it does get some heat. It will heat up at idle, but cools down to cold when i drive it.
-2001 Tahoe original 5.3 4x4 only 435k
-Down to 2 three wheelers
-1985 V65 Magna
-1973 CT70 with 125cc motor