Recently as Aug. 2010 ordered new crate motor from Scroggins Dicky for my 2000 GMC Sierra. After a local repair shop installed motor, used them before and had no problems, a serious tapping in the motor from the first start of the engine has been a problem. Several attempts to remedy the problem, have not changed the the situation. So I had the vehicle taken to the local dealer, and at my expence the dealer will look into the problem. Only I have about $4500.00 invested in this LS6 motor and don't believe I should be out more cash to... read full review »