1999 Other GMC Models Truck sputters and bogs down when give

I have a1999 GMC Suburban with 175k miles. I've taken good care of it but now I have an odd problem that's getting progressively worste.

When I start the truck or start to go from a stop, I give it gas and it sputters and looses power. If I flutter the gas pedal I can nurse it up in RPM until it revvs up just fine and I can sail along until I stop again. If I try to give a lot of gas when it's bogging down, it will pop a bit and backfire a small amount before dying.

This has gone over a few days from just when I started it, acting like this, to now, where every stop causes it.

Any idea as what could be causing this problem? I haven't run low on fuel lately and I put a fuel filter in last year.