Use the scan tool data list under the following conditions:
| • | The Diagnostic System Check - Vehicle 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 |
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 | On/Off | On | ||||||||||||||||||||
1-2 Sol. CKT Status | F2 | Indeterminate, OK, Open/Short to GND, Short to Volts | Indeterminate | ||||||||||||||||||||
1-2 TAP Cell (4-14) | 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 | On/Off | On | ||||||||||||||||||||
2-3 Sol. CKT Status | F3 | Indeterminate, OK, Open/Short to GND, Short to Volts | Indeterminate | ||||||||||||||||||||
2-3 TAP Cell (4-14) | F7/F1 | kPa (psi) | Varies | ||||||||||||||||||||
3-2 Downshift Sol. | F0, F5 | On/Off | On | ||||||||||||||||||||
3-2 Sol. CKT Status | F5 | Indeterminate, OK, Open/Short to GND, Short to Volts | Indeterminate | ||||||||||||||||||||
3-4 Shift Error | F4 | Seconds | Varies | ||||||||||||||||||||
3-4 Shift Time | F0, F4 | Seconds | Varies | ||||||||||||||||||||
4WD | F0 | Enabled/Disabled | Enabled | ||||||||||||||||||||
4WD Low | F0 | Enabled/Disabled | Disabled | ||||||||||||||||||||
Brake Switch | F0, F1 | Applied/Released | Released | ||||||||||||||||||||
Calc. Throttle Position | F0, F1, F2, F3, F4, F5, F6 | Percent | Varies | ||||||||||||||||||||
Commanded Gear | F0, F1, F2, F3, F4, F5, F6 | 1, 2, 3, 4 | 1 | ||||||||||||||||||||
Current TAP Cell | F7/F0, F7/F1 | 0-16 | Varies | ||||||||||||||||||||
ECT | F0, F1 | °C (°F) | Varies | ||||||||||||||||||||
Engine Speed | F0, F1, F2, F3, F4, F5, F6 | RPM | Varies | ||||||||||||||||||||
Engine Torque | F0, F1 | N·m (lb ft) | Varies | ||||||||||||||||||||
Gear Ratio | F0, F1, F2, F3, F4, F5 | Ratio | 3.98:1 | ||||||||||||||||||||
Ignition Voltage | F0 | Volts | 12-14 Volts | ||||||||||||||||||||
Last Shift Time | F0 | Seconds | Varies | ||||||||||||||||||||
PC Sol. Actual Current | F0, F6 | amps | 0.1-1.1 amps | ||||||||||||||||||||
PC Sol. Duty Cycle | F0, F6 | Percent | Varies | ||||||||||||||||||||
PC Sol. Ref. Current | F0, F6 | amps | 0.1-1.1 amps | ||||||||||||||||||||
TCC Duty Cycle | F0, F1 | Percent | 0% | ||||||||||||||||||||
TCC Duty Cycle CKT Status | F1 | Indeterminate, OK, Open/Short to GND, Short to Volts | Indeterminate | ||||||||||||||||||||
TCC Enable Sol. | F0, F1 | Enabled/Disabled | Disabled | ||||||||||||||||||||
TCC Enable Sol. CKT Status | F1 | Indeterminate, OK, Open/Short to GND, Short to Volts | Indeterminate | ||||||||||||||||||||
TCC Slip Speed | F0, F1 | RPM | Varies | ||||||||||||||||||||
TFP Sw. | F0 | Park/Neutral, Reverse, Drive1, Drive2, Drive3, Drive4 | Park/Neutral | ||||||||||||||||||||
TFP Sw. A/B/C | F0 | HI/LOW | HI/LOW/HI | ||||||||||||||||||||
Tow/Haul Mode | F0 | Active/Inactive | Inactive | ||||||||||||||||||||
TR Sw. | F0 | Park/Neutral, Reverse, Drive1, Drive2, Drive3, Drive4 | Park | ||||||||||||||||||||
TR Sw. A/B/C/P | F0 | HI/LOW | LOW/HI/HI/LOW | ||||||||||||||||||||
Trans. Fluid Temp. | F0, F1, F5, F6 | °C (°F) | Varies | ||||||||||||||||||||
Trans. Slip Counter | F0, F1 | 0, 1, 2 | 0 | ||||||||||||||||||||
Transfer Case Ratio | F0, F2, F3, F4 | Ratio | 2.61:1 | ||||||||||||||||||||
Transmission Hot Mode | F0, F1 | On/Off | Off | ||||||||||||||||||||
Transmission ISS | F0, F1, F2, F3, F4, F5 | RPM | 0 | ||||||||||||||||||||
Transmission OSS | F0, F1, F2, F3, F4, F5 | RPM | 0 | ||||||||||||||||||||
*Data List Legend
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