GMC Suburban Engine Stall at Idle

I Have A 1999 Gmc Suburban With A 5.7 Vortec Motor. It Started With Slight Sputtering When You Floor It About 2 Or 3 Months Ago But Has...

I Have A1994 Gmc Sub 1500 It Hard To Start And When It Starts Some Time It Runs For A Few Min. Other Time Have To Keep Foot On Gas. Fuel Psi...