Diagnostic Aids
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
- This DTC may be stored as a history DTC without affecting the operation of the module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.
- If this DTC is retrieved as both a current and history DTC, replace the module.
- If this DTC continues to set intermittently, replace the module
DTC C0550
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
Go to Step 3 | Go to Diagnostic Aids |
| 3 | Replace the control module setting the DTC as current. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 4 | - |
| 4 |
|
Go to Step 2 | System OK |