stalls

Hi, I'm new on here, bought a 94 suburban in February. It has never had a whole lot of power and only gets like 9-10 mpg. Lately, though, it has started to stall right at start up when the engine is warm (20-30mins after stopping when running to the store or something). My wife thought it might...

My 96 K1500 (Vortex) was running great with a fresh tune-up (new plugs, wires, cap, rotor and fuel filter). Then, about 2 weeks later, I noticed it seemed to be stalling out going downhill at highway speed. Next. I was going about 40 in town when the engine (and radio) shut off, but both came...