Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Scan Tool Data List
Use the scan tool data values under the following conditions:
- The Diagnostic System Check - Vehicle is complete.
- The On-Board Diagnostics are functioning properly.
- There are no diagnostic trouble codes (DTCs) present.
The values below represent a typical display recorded from a properly functioning system.
Only the parameters listed below are used in this information 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 Time | F0, F2, F6/F0 | Seconds | Varies |
| 1-2 Sol. | F0, F2, F3, F4 | On/Off | On |
| 1-2 Sol. CKT Status | F2 | OK, Open/Short to GND, Short to Volts | OK |
| 1-2 TAP Cell 4-16 | F6/F0 | kPa (psi) | Varies |
| 2-3 Shift Time | F0, F3, F6/F1 | Seconds | Varies |
| 2-3 Sol. | F0, F2, F3, F4 | On/Off | Off |
| 2-3 Sol. CKT Status | F3 | OK, Open/Short to GND, Short to Volts | OK |
| 2-3 TAP Cell 4-16 | F6/F1 | kPa (psi) | Varies |
| 3-4 Shift Time | F0, F4, F6/F2 | Seconds | Varies |
| 3-4 TAP Cell 4-16 | F6/F2 | kPa (psi) | Varies |
| Calc. Throttle Position | F0, F1, F2, F3, F4, F5 | % | 0% |
| Commanded Gear | F0, F1, F2, F3, F4, F5 | 1, 2, 3, 4 | 1 |
| Current TAP Cell | F6/F0, F6/F1, F6/F2 | 4-16 | Varies |
| ECT Sensor | F0, F1 | °C (°F) | 85-105°C (185-220°F) |
| 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 |
| Ignition Voltage | F0 | Volts | 12.6-14.7 |
| Last Shift Time | F0 | Seconds | Varies |
| PC Sol. Actual Current | F0, F5 | Amps | Varies |
| PC Sol. 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 Brake Switch | F0, F1 | Open/Closed | Closed |
| TCC Duty Cycle | F0, F1 | % | 0% |
| TCC Duty Cycle CKT Status | F1 | OK, Open/Short to GND, Short to Volts | OK |
| TCC Release Pressure | F0, F1 | Yes/No | Yes |
| TCC Slip Speed | F0, F1 | RPM | Varies |
| TFP Sw. | F0 | Park/Neutral, Reverse, Drive, or invalid | Park/Neutral |
| TFP Sw. Sig. B/ Sig. C | F0 | HI/LOW | HI/HI |
| TR Sw. | F0 | Park, Reverse, Neutral, Drive 4, Drive 3, Drive 2, Drive 1 or invalid | Park |
| TR Sw. A/B/C/P | F0 | HI/LOW | LOW/HI/HI/LOW |
| Traction Control Signal | F0 | Active/Inactive | Inactive |
| Trans. Fluid Temp. | F0, F1, F5 | °C (°F) | 80-90°C (176-194°F) |
| Transmission Hot Mode | F0, F1 | On/Off | Off |
| 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
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NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.