GM Service Manual Online
For 1990-2009 cars only

Transmission Scan Tool Data Values Gas LQ4

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 (Gas)

Scan Tool Parameter

Data List*

Units

Typical Data Values

1-2 Shift Error

F2,F6

Seconds

Varies

1-2 Shift Time

F0,F2

Seconds

Varies

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

kPa/Psi

Varies

2-3 Shift Error

F3,F7

Seconds

Varies

2-3 Shift Time

F0,F3

Seconds

Varies

2-3 Sol.

F0,F2,F3,F4

On/Off

Off

2-3 Sol. Open/Short to GND

F0,F3

Yes/No

No

2-3 Sol. Shorted to Volts

F0,F3

Yes/No

No

2-3 TAP Cell (4-16)

F7

kPa/Psi

Varies

3-4 Shift Error

F4

Seconds

Varies

3-4 Shift Time

F0,F4

Seconds

Varies

4WD

F0

Enabled/Disabled

Disabled

4WD Low

F0

Enabled/Disabled

Disabled

A/C Clutch

F0

On/Off

Off

Adaptable Shift

F0,F6,F7

Yes/No

No

Cruise

F0

Enabled/Disabled

Disabled

Current Gear

F0,F1,F2,F3,F4,F5

1,2,3,4

1

Current TAP Cell

F6,F7

0-16

Varies

Current TAP Memory

F6,F7

0-16

Varies

ECT

F0,F1

°C (°F)

Varies

Engine Run Time

F0

Hr:Min:Sec

Varies

Engine Speed

F0,F1,F2,F3,F4,F5

RPM

600-800

Engine Torque

F0,F1

N·m (lb ft)

10

Gear Ratio

F0,F2,F3,F4

Ratio

3.98:1

IAT

F0

°C (°F)

Varies

Ignition Voltage

F0

Volts

13.5-14.5

Latest Shift

F0

Seconds

0.00 seconds

PC Sol. Actual Current

F0,F5

Amps

0.92 amps

PC Sol. Duty Cycle

F0,F5

Percent On Time

Varies

PC Sol. Ref. Current

F0,F5

Amps

0.92 amps

Speed Ratio

F0,F2,F3,F4

Ratio

8.00:1

TCC Brake Switch

F0,F1

Open/Closed

Closed

TCC Duty Cycle

F0,F1

%

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 Mode

F0,F1

0-5

0

TCC Slip Speed

F0,F1

RPM

+/- 150

TFP Sw. A/B/C

F0

On/Off

Off/On/Off

TFT Sensor

F0,F1

Volts

Varies

Tow/Haul Mode

Active/Inactive

F0

Inactive

TP Angle

F0,F1,F2,F3,F4,F5

Percent

0%

TP Sensor

F0,F1,F2,F3,F4

Volts

0.5-0.7 V

Transfer Case Ratio

F0,F2,F3,F4

Ratio

3.22:1

Trans. Fluid Temp.

F0,F1,F5

°C (°F)

Varies

Transmission Hot Mode

F0,F1

On/Off

Off

Transmission ISS

F0,F1,F2,F3,F4

RPM

600-800

Transmission OSS

F0,F1,F2,F3,F4,F5

RPM

0

Turbine Speed

F2,F3,F4

RPM

600-800

Vehicle Speed

F0,F1,F2,F3,F4

km/h (mph)

0

*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: 1-2 Adapt Data
    • F7: 2-3 Adapt Data