Circuit/System Verification
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Verify DTC P0070 - P0074, P0111, P0112, P0113, P0114, P0117, P0118, P0119, P0128, P0601, P112F, P1621, P2610 is not set.
- If any of the DTCs are set
- Go to next step: If none of the DTCs are set
- Ignition - On / Vehicle - In Service Mode
- Verify the following parameters are within 15. 8°C (60°F) of each other:
- Ambient Air Temperature Sensor
- ECT Sensor
- IAT Sensor 1
- If not within 15. 8°C (60°F) of each other
{Ambient Air Temperature Sensor }Refer to: DTC P0071-P0074
{ECT Sensor }Refer to: Circuit/System Testing
{IAT Sensor 1}Refer to: DTC P0112, P0113, or P0114
- Go to next step: If within 15. 8°C (60°F) of each other
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
- If the DTC sets
- All OK.