Test Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Isuzu Ascender, 2005 GMC Envoy XUV, 2005 GMC Envoy XL, 2005 GMC Envoy, and 2005 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 3: The powertrain control module (PCM) must have the correct part number for the specified application.
DTC C0279
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 |
|
Go to Step 3 | Go to Diagnostics Aids |
| 3 | Verify the correct powertrain control module (PCM) is installed in the vehicle. Does the vehicle have the correct PCM? |
Go to Step 4 | Go to Step 6 |
| 4 | Use the scan tool in order to read the Calibration IDs of the PCM. Are the PCM Calibration IDs correct? |
Go to Diagnostics Aids | Go to Step 5 |
| 5 | Perform the set up procedure for the PCM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the action? |
Go to Step 7 | - |
| 6 |
IMPORTANT:
Perform the set up procedure for the PCM. Replace the PCM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming.Did you complete the replacement? |
Go to Step 7 | - |
| 7 |
|
Go to Step 3 | System OK |