i have a 1997 gmc 1500
z71 off road edition 4x4 it has a 350 vortec with 182000 miles on it the truck is extended cab with the third door it has a automatic transmission that was rebuilt but the guy forgot something in it so it goes into 1st second and reverse gear fine but sometimes slips in the rest that and since its a 97 it has the push button for the 4x4 and the sencor for that is dead but...