Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Shift Schedules
As mentioned earlier, the TCM has programming that allows it to select a variety of shift schedules. Shift schedule selection is dependent on the following:
- Shift lever position
- Throttle position
- Engine load
- Fluid temperature
- Software level
As driving conditions change, the TCM appropriately adjusts the shift schedule. Refer to the following chart to determine the appropriate operation expected, depending on driving conditions.
| Schedule | Condition | Expected Operation |
| Extreme Cold | Oil temperature below -16° F | -Park, Reverse, Neutral and 1st and 3rd gear only in D position, 2nd gear only in Manual 2 or L |
| -No EMCC | ||
| Super Cold | Oil temperature between -12° F and 10° F | - Delayed 2-3 upshift |
| - Delayed 3-4 upshift | ||
| - Early 4-3 coastdown shift | ||
| - High speed 4-2, 3-2, 2-1 kickdown shifts are prevented | ||
| -Shifts at high throttle openings will be early. | ||
| - No EMCC | ||
| Cold | Oil temperature between 10° F and 36° F | -Shift schedule is the same as Super Cold except that the 2-3 upshifts are not delayed. |
| Warm | Oil temperature between 40° F and 80° F | - Normal operation (upshift, kickdowns, and coastdowns) |
| - No EMCC | ||
| Hot | Oil temperature between 80° F and 240° F | - Normal operation (upshift, kickdowns, and coastdowns) |
| - Normal EMCC operation | ||
| Overheat | Oil temperature above 240° F or engine coolant temperature above 244° F | - Delayed 2-3 upshift |
| - Delayed 3-4 upshift | ||
| - 3rd gear FEMCC from 30-48 mph | ||
| - 3rd gear PEMCC above 35 mph | ||
| - Above 25 mph the torque converter will not unlock unless the throttle is closed or if a wide open throttle 2nd PEMCC to 1 kickdown is made |
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.