GMC Sierra Camshaft Lifter Noise

When I Crank The Truck In The Mornings It Has A Tapping Noise That I Think Are The Lifters. After The Oil Pressure Builds Up The Noise Stops...

I Read On A Gmc Blog That You Cannot Replace A Noise Making Lifter Without Removing The Heads On A Vortec V-8 5.3l. Is This True? I Have A...

I Replaced The Engine With A Long Block ,but Didn't Get The Truck On The Road For Many Years, Now The Lifters Are Making Noise, What Is The...