For 1990-2009 cars

Use the Scan Tool Data List under the following conditions:

• | The Diagnostic System Check - Vehicle has been completed

• | The On-Board Diagnostics (OBD) are functioning properly

• | No DTCs are present

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 service 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

• | Radiator upper hose is hot

• | Closed throttle

• | Transmission in PARK

• | Closed loop operation

• | Accessories OFF

• | Brake pedal not applied

Scan Tool Parameter | Data List* | Units Displayed | Typical Data Value
--- | --- | --- | ---
1-2 Shift Error | F2, F7/F0 | Seconds | Varies
1-2 Shift Time | F0, F2, F7/F0 | Seconds | Varies
1-2 Sol. | F0, F2, F3, F4, F5 | On/Off | Off
1-2 Sol. CKT Status | F2 | OK/Short to Volts/Open/Short to GND/Indeterminate | OK
1-2 TAP Cell (4-16) | F7/F0 | kPa (psi) | Varies
2-3 Shift Error | F3, F7/F1 | Seconds | Varies
2-3 Shift Time | F0, F3, F7/F1 | Seconds | Varies
2-3 Sol. | F0, F2, F3, F4, F5 | On/Off | On
2-3 Sol. CKT Status | F3 | OK/Short to Volts/Open/Short to GND/Indeterminate | OK
2-3 TAP Cell (4-16) | F7/F1 | kPa (psi) | Varies
3-4 Shift Error | F4, F7/F2 | Seconds | Varies
3-4 Shift Time | F0, F4, F7/F2 | Seconds | Varies
3-4 TAP Cell (4-16) | F7/F2 | kPa (psi) | Varies
4-5 Shift Error | F5, F7/F3 | Seconds | Varies
4-5 Shift Time | F0, F5, F7/F3 | Seconds | Varies
4-5 Sol. | F0, F2, F3, F4, F5 | On/Off | Off
4-5 Sol. CKT Status | F5 | OK/Short to Volts/Open/Short to GND/Indeterminate | OK
4-5 TAP Cell (4-16) | F7/F3 | kPa (psi) | Varies
Commanded Gear | F0, F1, F2, F3, F4, F5, F6 | 1,2,3,4,5 | 1
Cruise | F0 | Enabled/Disabled | Disabled
Current TAP Cell | F7/F0, F7/F1, F7/F2, F7/F3 | 4-16 | Varies
ECT | F0, F1 | °C (°F) | 85-115°C (185-239°F)
Engine Speed | F0, F1, F2, F3, F4, F5, F6 | RPM | 650-800 RPM
Engine Torque | F0, F1 | N·m(lb. ft) | 0-13 N·m (lb. ft)
Gear Ratio | F0, F1, F2, F3, F4, F5 | Ratio | Varies
High Side Driver 1 | F6 | Enabled/Disabled | Enabled
High Side Driver 1 CKT Status | F6 | OK/Short to Volts/Open/Short to GND/Indeterminate | OK
High Side Driver 2 | F1, F2, F3, F4, F5 | Enabled/Disabled | Enabled
High Side Driver 2 CKT Status | F1, F2, F3, F4, F5 | OK/Short to Volts/Open/Short to GND/Indeterminate | OK
Ignition Voltage | F0 | Volts | 12.0-14.7 Volts
IMS A/B/C/P | F0 | HI/LOW | High/Low/Low/High
IMS | F0 | Park, Park/Reverse, Reverse, Reverse/Neutral, Neutral, Neutral/Drive 5, Drive 5, Drive 5/Drive 4, Drive 4, Drive 4/Drive 3, Drive 3, Drive 3/Drive 2, Drive 2, Invalid | Park
Last Shift Time | F0 | Seconds | Varies
PC Sol. Actual Current | F0, F6 | Amps | Varies
PC Solenoid Duty Cycle | F0, F6 | % | Varies
PC Sol. Ref. Current | F0, F6 | Amps | Varies
Steady State TAP 1 GR | F7/F4 | kPa (psi) | Varies
Steady State TAP 1 GR/TCC | F7/F4 | kPa (psi) | Varies
Steady State TAP 2 GR | F7/F4 | kPa (psi) | Varies
Steady State TAP 2 GR/TCC | F7/F4 | kPa (psi) | Varies
Steady State TAP 3 GR | F7/F4 | kPa (psi) | Varies
Steady State TAP 3 GR/TCC | F7/F4 | kPa (psi) | Varies
Steady State TAP 4 GR | F7/F4 | kPa (psi) | Varies
Steady State TAP 4 GR/TCC | F7/F4 | kPa (psi) | Varies
Steady State TAP 5 GR | F7/F4 | kPa (psi) | Varies
Steady State TAP 5 GR/TCC | F7/F4 | kPa (psi) | Varies
Steady State TAP Reverse | F7/F4 | kPa (psi) | Varies
TCC Brake Switch | F0, F1 | On/Off | Off
TCC Duty Cycle | F0, F1 | % | 0%
TCC Duty Cycle CKT Status | F1 | OK/Short to Volts/Open/Short to GND/Indeterminate | OK
TCC Slip Speed | F0, F1 | RPM | 0 RPM
TP Angle | F0, F1, F2, F3, F4, F5, F6 | % | 0
Traction Control | F0 | Active/Inactive | Inactive
Trans. Fluid Temp. | F0, F1, F6 | °C (°F) | 85-110°C (185-239°F)
Trans. Oil Life | F0 | 0-100 percent | Varies
Transmission Hot Mode | F0, F1 | On/Off | Off
Transmission ISS | F0, F1, F2, F3, F4, F5 | RPM | 650-800 RPM
Transmission OSS | F0, F1, F2, F3, F4, F5 | RPM | 0 RPM
Vehicle Speed | F0, F1, F2, F3, F4, F5 | km/h (mph) | 0 km/h (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: 4-5 Shift Data

• | F6: PC Solenoid Data

• | F7/F0: Transmission Adapts/1-2 Adapt. Data

• | F7/F1: Transmission Adapts/2-3 Adapt. Data

• | F7/F2: Transmission Adapts/3-4 Adapt. Data

• | F7/F3: Transmission Adapts/4-5 Adapt. Data

• | F7/F4: Transmission Adapts/Steady State Data