Scan Tool Data List
WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
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 Neutral
- Closed Loop operation
- Accessories OFF
- Brake pedal not applied
Transmission Scan Tool Data List - 4.3L
| Scan Tool Parameter | Data List* | Units Displayed | Typical Data Values |
|---|---|---|---|
| Clutch Pedal Switch | F0, F1 | Applied/Released | Released |
| Vehicle Speed Sensor | ALL | km/h (mph) | 0 |
|
*Data List Legend
|
|||
Transmission Scan Tool Data List - 4.8L
| Scan Tool Parameter | Data List* | Units Displayed | Typical Data Values |
|---|---|---|---|
| Clutch Pedal Switch | F1 | Applied/Released | Released |
| Vehicle Speed Sensor | ALL | km/h (mph) | 0 |
|
*Data List Legend
|
|||