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.

SHIFT SCHEDULES

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