GM Service Manual Online
For 1990-2009 cars only

Use the scan tool data values under the following conditions:

    • The Powertrain On-Board Diagnostic (OBD) System Check is complete.
    • The on-board diagnostics are functioning properly.
    • No DTCs are present.

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 Values

Scan Tool Parameter

Data List*

Units

Typical Data Value

1-2 Shift Error

F2, F6/F0

seconds

0.00 seconds

1-2 Shift Time

F0, F2, F6/F0

seconds

0.65 seconds

1-2 Sol.

F0, F2, F3, F4

On/Off

On

1-2 Sol. Open/Short to GND

F0, F2

Yes/No

No

1-2 Sol. Short to Volts

F0, F2

Yes/No

No

1-2 TAP Cell (4-16)

F6/F0

kPa/Psi

each cell varies

2-3 Shift Error

F3, F6/F1

seconds

0.15 seconds

2-3 Shift Time

F0, F3, F6/F1

seconds

0.50 seconds

2-3 Sol.

F0, F2, F3, F4

On/Off

On

2-3 Sol. Open/Short to GND

F0, F3

Yes/No

No

2-3 Sol. Short to Volts

F0, F3

Yes/No

No

2-3 TAP Cell (4-16)

F6/F1

kPa/Psi

each cell varies

3-4 Shift Error

F4, F6/F2

seconds

-0.20 seconds

3-4 Shift Time

F0, F4, F6/F2

seconds

0.85 seconds

3-4 TAP Cell (4-16)

F6/F2

kPa/Psi

each cell varies

A/C Clutch

F0

On/Off

Off

Adaptable Shift

F0, F6/F0, F6/F1, F6/F2

Yes/No

No

Brake Switch

F0, F1

Open/Closed

Closed

Cruise

F0

Enabled/Disabled

Disabled

Current Gear

F0, F1, F2, F3, F4, F5

1, 2, 3, 4

1

Current TAP Cell

F6/F0, F6/F1, F6/F2

0-16

0

Current TAP Memory

F6/F0, F6/F1, F6/F2

kPa/Psi

-16

ECT

F0, F1

°C (°F)

97°C (206°F)

Engine Run Time

F0

hours/minutes/seconds

00:07:34

Engine Speed

F0, F1, F2, F3, F4, F5

RPM

1040 RPM

Engine Torque

F0, F1

N·m (lb ft)

52 N·m (38 lb ft)

Gear Ratio

F0, F1, F2, F3, F4

ratio (ISS to OSS)

3.98

Hot Mode

F0, F1

On/Off

Off

Ignition Voltage

F0

Volts

13.1 Volts

Last Shift Time

F0

seconds

0.65 seconds

PC Sol. Actual Current

F0, F5

amps

1.01 amps

PC Solenoid Duty Cycle

F0, F5

percent

46%

PC Sol. Ref. Current

F0, F5

amps

1.01 amps

Shift Mode

F0

Normal/Performance

Normal

Steady State TAP 1GR

F6/F3

kPa/Psi

0.00

Steady State TAP 2GR

F6/F3

kPa/Psi

0.00

Steady State TAP 2GR/TC

F6/F3

kPa/Psi

0.00

Steady State TAP 3GR

F6/F3

kPa/Psi

0.00

Steady State TAP 3GR/TC

F6/F3

kPa/Psi

0.00

Steady State TAP 4GR

F6/F3

kPa/Psi

0.00

Steady State TAP 4GR/TC

F6/F3

kPa/Psi

0.00

Steady State TAP Revers

F6/F3

kPa/Psi

0.00

TCC Duty Cycle

F0, F1

percent

0%

TCC Duty Cycle Open/Short to GND

F0, F1

Yes/No

No

TCC Duty Cycle Short to Volts

F0, F1

Yes/No

No

TCC Release Pressure

F0, F1

Yes/No

No

TCC Slip Speed

F0, F1

RPM

85 RPM

TFP Range

F0

Park/Neutral, Reverse, Drive 4, Drive 3, Drive 2, Drive 1, Invalid

Park/Neutral

TFP Switch A/B/C

F0

On/Off

Off/On/Off

TFT Sensor

F0, F1, F5

Volts

2.63 Volts

TP Angle

F0, F1, F2, F3, F4, F5

percent

0%

TP Sensor

F0, F1, F2, F3, F4

Volts

0.51 Volts

Traction Control

F0

Active/Inactive

Inactive

Trans. Fluid Temp.

F0, F1, F5

°C (°F)

72°C (161°F)

Transmission ISS

F0, F1, F2, F3, F4

RPM

950 RPM

Transmission OSS

F0, F1, F2, F3, F4

RPM

0 RPM

Vehicle Speed

F0, F1, F2, F3, F4

km/h (mph)

0 mph

*Data List Legend

    • F0: Transmission Data
    • F1: TCC Data
    • F2: 1-2 Shift Data
    • F3: 2-3 Shift Data
    • F4: 3-4 Shift Data
    • F5: PC Solenoid Data
    • F6: Transmission Adapts
    • F6/F0: 1-2 Adapt Data
    • F6/F1: 2-3 Adapt Data
    • F6/F2: 3-4 Adapt Data
    • F6/F3: Steady State Data