My truck will start and I can put in drive but when I go to drive it, it won't change gears and the speedomoter doesn't work. I got the codes 28 and 72. But not sure what they are or how to fix.
Wednesday, July 21st, 2010 AT 4:09 PM
1 Reply
JACOBANDNICKOLAS
MECHANIC
110,176 POSTS
28 Transmission Range (TR) Pressure Switch Assembly Fault
72 Vehicle Speed Sensor (VSS) Circuit
Based on that, I would say the speed sensor is bad. Have that checked first. The pressure switch won't stop the speedo but the VSS will.