what's wrong with ith my 96 k1500 4x4
my Chevrolet runs great in park and
neutral,when I put it in drive it runs very bad,
I checked the fuel pressure,changed the
plugs and wires,throttle position sensor and
idle control sensor.and put a different mass
airflow sensor on it a new fuel filter gas
treatment,and the distributor looks new and
looks fine inside. it ran ok for a few days
then it started dying on me every 30
minutes, and it's getting 10 mpg or
less.whats going on??!!