Hey everyone I'm new here, I bought a 99 suburban a yr ago with 100k miles. I've had the intake gasket replaced new brakes and tires since, Now when I start up put in drive if I try and give it any good pressure on the pedal it hesitates. From my driveway it takes about halfway down the block for the power to kick in. It seems to only do this on start up and initial acceleration, not at any other speeds not taking of from stops. I tested it by driving around for awhile stopping turn off turn back on and go and did it's few second hesitation. Did this several times, same each time. Any help,suggestions would be great!