Diagnostic Test

CHECK FOR TRANSMISSION SPEED SENSOR DTCS 

1. With the scan tool, read Transmission Control Module (TCM) DTCs and record on the repair order.

   Are any Transmission Speed Sensor DTCs set?

   Yes 

   • Repair Transmission Speed Sensor DTCs. Refer to DIAGNOSTIC CODE INDEX .
   • Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .

   No 

   • Verify the customer did not shift into REVERSE while vehicle was moving forward at high speed.