For 1990-2009 cars

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 | Varies
1-2 Shift Time | F0, F2, F6/F0 | 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/F0 | kPa (psi) | Varies
2-3 Shift Error | F3, F6/F1 | Seconds | Varies
2-3 Shift Time | F0, F3, F6/F1 | 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. Short to Volts | F0, F3 | Yes/No | No
2-3 TAP Cell 4-16 | F6/F1 | kPa (psi) | Varies
3-4 Shift Error | F4, F6/F2 | Seconds | Varies
3-4 Shift Time | F0, F4, F6/F2 | Seconds | Varies
3-4 TAP Cell 4-16 | F6/F2 | kPa (psi) | Varies
A/C Clutch | F0 | On/Off | Off
Adaptable Shift | F0, F6/F0, F6/F1, F6/F2 | 0, 1, 2, 3, 4 | Varies
Brake Switch | F0, F1 | Open/Closed | Closed
Cruise | F0 | Disabled/Enabled | Disabled
Current Gear | F0, F1, F2, F3, F4, F5 | 1, 2, 3, 4 | 1
Current TAP Cell | F6/F0, F6/F1, F6/F2 | 4-16 | Varies
Current TAP Memory | F6/F0, F6/F1, F6/F2 | kPa (psi) | Varies
ECT | F0, F1 | °C (°F) | 85°-105°C (185°-220°F)
Engine Run Time | F0 | hours:minutes:seconds | Varies
Engine Speed | F0, F1, F2, F3, F4, F5 | RPM | Varies
Engine Torque | F0, F1 | N·m (lb ft) | Varies
Gear Ratio | F0, F1, F2, F3, F4 | Ratio | 3.98:1
Hot Mode | F0, F1 | On/Off | Off
Ignition Voltage | F0 | Volts | 12.6-14.0
Last Shift Time | F0 | Seconds | Varies
PC Sol. Actual Current | F0, F5 | Amps | Varies
PC Solenoid Duty Cycle | F0, F5 | % | Varies
PC Sol. Ref. Current | F0, F5 | Amps | Varies
Steady State TAP 1GR | F6/F3 | kPa (psi) | Varies
Steady State TAP 2GR | F6/F3 | kPa (psi) | Varies
Steady State TAP 2GR/TCC | F6/F3 | kPa (psi) | Varies
Steady State TAP 3GR | F6/F3 | kPa (psi) | Varies
Steady State TAP 3GR/TCC | F6/F3 | kPa (psi) | Varies
Steady State TAP 4GR | F6/F3 | kPa (psi) | Varies
Steady State TAP 4GR/TCC | F6/F3 | kPa (psi) | Varies
Steady State TAP Reverse | F6/F3 | kPa (psi) | Varies
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 Release Pressure | F0, F1 | Yes/No | Yes
TCC Slip Speed | F0, F1 | RPM | Varies
TFP Range | F0 | Park/Neutral, Reverse, Drive 4, Drive 3, Drive 2, Drive 1 | Park/Neutral
TFP Sw. A/B/C | F0 | On/Off | On/Off/Off
TFT Sensor | F0, F1, F5 | Volts | Varies
TP Angle | F0, F1, F2, F3, F4, F5 | % | 0%
TP Sensor | F0, F1, F2, F3, F4 | Volts | 0.20-0.74 volts
Traction Control | F0 | Active/Inactive | Inactive
Trans. Fluid Temp. | F0, F1, F5 | °C (°F) | 80°-90°C (176°-194°F)
Transmission ISS | F0, F1, F2, F3, F4 | RPM | Varies
Transmission OSS | F0, F1, F2, F3, F4 | RPM | 0
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/F0: Transmission Adapts/1-2 Adapt Data

• | F6/F1: Transmission Adapts/2-3 Adapt Data

• | F6/F2: Transmission Adapts/3-4 Adapt Data

• | F6/F3: Transmission Adapts/Steady State Data