GM Service Manual Online
For 1990-2009 cars only

The values below represent a typical display recorded from a properly functioning system.

Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts.

Only the parameters listed below are used in this manual for diagnosing. If a scan tool displays other parameters, the values are not recommended by General Motors for use in diagnosis.

Scan tool values below were recorded under the following conditions:

    • Engine at idle
    • Upper radiator hose hot
    • Closed throttle
    • Transmission in Park
    • Closed Loop operation
    • Accessories OFF
    • Brake pedal not applied

Transmission Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

TP Angle

F0, F1, F2

percent

0

Battery Voltage

F0

volts

12.8

Brake Switch

F0, F1, F2

Applied, Released

Released

Commanded Gear

F0, F1, F2, F3

1, 2, 3, 4, 5

1

Cruise

F0

Enabled, Disabled

Disabled

ECT

F0, F1, F2

°C (°F)

85-105°C (185-220°F)

Engine Speed

F0, F1, F2

RPM

660-680

Engine Torque

F0, F1, F2

N·m (lb ft)

0

Gear Ratio

F0, F1, F2, F3

Ratio

7.97:1

Ignition Voltage

F0, F2, F3

Volts

12.6-14.0

Last 1-2 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 2-1 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 2-3 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 2-4 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 3-2 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 3-4 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 4-2 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 4-3 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 4-5 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Last 5-4 Shift Status

F2

Good, Flare, Tie-Up, Short, Long, Inconclusive

Inconclusive, Good

Line PC Sol. Actual Current

F0, F3

amps

0.96

Line PC Sol. CKT Status

F0, F3

OK, Open/Short to Volts, Short to GND

OK

Line PC Sol. Duty Cycle

F0, F2, F3

percent

59

Line PC Sol. Ref. Current

F0, F3

amps

1.0

Shift PC Sol. Actual Current

F0, F3

amps

0.66

Shift PC Sol. CKT Status

F0, F3

OK, Open/Short to Volts, Short to GND

OK

Shift PC Sol. Duty Cycle

F0, F2, F3

percent

39

Shift PC Sol. Ref. Current

F0, F3

amps

0.66

Shift Solenoid 1

F0, F2, F3

On, Off

Off

Shift Solenoid 1 CKT Status

F0, F3

OK, Open/Short to Volts, Short to GND

OK

Shift Solenoid 2

F0, F2, F3

On, Off

Off

Shift Solenoid 2 CKT Status

F0, F3

OK, Open/Short to Volts, Short to GND

OK

Shift Solenoid 3

F0, F2, F3

On, Off

Off

Shift Solenoid 3 CKT Status

F0, F3

OK, Open/Short to Volts, Short to GND

OK

Shift Solenoid 4

F0, F1, F2, F3

On, Off

Off

Shift Sol. 4 CKT Status

F0, F1, F3

OK, Open/Short to Volts, Short to GND

OK

Shift Solenoid 5

F0, F2, F3

On, Off

Off

Shift Solenoid 5 CKT Status

F0, F3

OK, Open/Short to Volts, Short to GND

OK

TCC PC Sol. Actual Current

F0, F1, F3

amps

0.20

TCC PC Sol. CKT Status

F0, F1, F3

OK, Open/Short to Volts, Short to GND

OK

TCC PC Sol. Duty Cycle

F0, F1, F2, F3

percent

14

TCC PC Sol. Ref. Current

F0, F1, F3

amps

0.20

TCC Slip Speed

F0, F1, F2

RPM

0-20

TR Sw.

F0, F2, F3

Park, Reverse, Neutral, Drive, Intermediate, Low, Invalid

Park

Trans. Fluid Temp.

F0, F1, F2

°C (°F)

158

Trans. Protection Mode

F0, F1, F2, F3

OFF, ON

OFF

Transmission Hot Mode

F0, F1, F2

OFF, ON

OFF

Transmission ISS

F0, F1, F2

RPM

700-800

Transmission OSS

F0, F1, F2

RPM

0

Vehicle Speed

F0, F1, F2

km/h (mph)

0

    • F0: Transmission Data
    • F1: TCC Data
    • F2: Shift Data
    • F3: Solenoid Data