Happy days are here again. Finally got the 8 ignition coils, Genuine GM, late this afternoon. I will be installing them tomorrow morning, firing up the engine, topping off coolant and monitoring, 2 road tests and recheck fluid levels, pressure test cooling system and get my final money from the guy and deliver the Denali. I got a check from him today for $1777. He is paid up to today. Whatever tomorrow's labor is, he owes me for that. Will be glad to have my parking spot again.