I have a 2002 trailblazr v6 inline automatic 148000 miles will not go forward or recverse can anyone help troubleshooting.

 

check your line pressure. turn the truck off and look at the tranny dip stick to see where the fluid is. then start the truck and pull it agin and see if the tranny fliud reads lower now. if it does not, then your tranny front pump went....