Shift Point Road Test

Shift Point Road Test

NOTE: Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.

This test verifies that the shift control system is operating correctly.

1. Bring engine and transmission up to normal operating temperature.

2. Operate the vehicle with the transmission selector lever in (D) range.

3. Apply minimum throttle and observe the speeds at which the upshift occurs and the torque converter engages. (Refer to the Shift Speeds chart.)

4. Press the accelerator pedal to the floor, Wide Open Throttle (WOT). The transmission should shift from 6th to 5th gear or 5th to 3rd gear depending on vehicle speed. Torque Converter Clutch (TCC) should disengage and then reapply.

5. With the vehicle speed above 48 km/h (30 mph), move the selector lever to the manual 3rd gear position. The transmission should immediately have a 5th to 3rd shift. When vehicle speed drops to 32 km/h (20 mph) a 3 to 1 shift should occur.

6. If the transmission fails to upshift/downshift or if the TCC does not apply and release, refer to Diagnosis By Symptom Diagnosis By Symptom for concern diagnosis.


Shift Speeds
Shift Speeds

NOTE: All shift speeds are for (D) position (Overdrive (O/D) not cancelled on diesel models and Tow/Haul not activated on gasoline models).

NOTE: All shift speeds listed are nominal and vary with calibration, model, axle ratio and tire size.






(a) indicates cold strategy