When Will The Tahoe Body Change What's The Spark Plug Calibration For Tahoe 96 V8 4x4 5.7L?

What's the spark plug calibration for tahoe 96 v8 4x4 5.7L? - when will the tahoe body change

I have a 96 Tahoe and I changed the spark plugs, then I feel the truck only stopped working when it ride, does not begin on the highway and what is the problem of calibration, everyone knows the calibration?