Hello again. I have a 2003 Trailblazer 5.3 4wd. I have put new stepper motors in the cluster, replaced wheel speed sensors and sensor on the transmission. Still when i try to drive it it wont register speed until 20 mph or so. Will not shift until it comes online and then its kind of erratic at best. When slowing down the speedometer goes flat. Any suggestions helpful. Thanks.