Shift Point Road Test: Notes

Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

This test verifies the shift control system is operating correctly.

1. Bring engine and transmission up to normal operating temperature.
2. Operate vehicle with the selector lever in the D position.
3. Apply minimum throttle and observe speeds when an upshift occurs and the torque converter engages. Refer to the Shift Speeds chart .
4. With the transmission in D, move the selector lever into the manual 3 position. The transmission should downshift to 4th gear. Release the accelerator pedal; engine braking should occur.
5. Press the accelerator pedal to Wide Open Throttle (WOT). Transmission should shift from 4th to 3rd, depending on vehicle speed. The torque converter should disengage and then reapply.
6. With the selector lever in the D position and speed above 80 km/h (50 mph) and less than half throttle, move the selector lever from the D position to manual 2 position and release the accelerator pedal. The transmission should downshift into 2nd gear. With the transmission remaining in the manual 2 position, move the selector lever into the manual 1 position and release the accelerator pedal. The transmission should downshift into 1st gear at speeds below approximately 45-56 km/h (28-35 mph).
7. If the transmission fails to upshift/downshift or the torque converter does not apply and release, refer to DIAGNOSIS BY SYMPTOM .