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.
- Ignition - On / Vehicle - In Service Mode
- Verify DTC B0158 is not set.
- If DTC B0158 is set
- Go to next step: If the DTC is not set
- Verify DTC P0070 is not set.
- If the DTC is not set
All OK.
- Go to next step: If DTC P0070 is set
- If the DTC is not set
- ClearDTC P0070
- Verify the DTC does not set.
- If the DTC is not set
All OK.
- Go to next step: If DTC P0070 is set
- If the DTC is not set
- Ignition/Vehicle - Off - For greater than 3 h
Verify the following parameters are within 15°C (59°F) of each other:
- IAT Sensor 1
- Ambient Air Temperature
- If not in the specified range
Replace the component: B9 Ambient Air Temperature Sensor
- Go to next step: If in the specified range
- Verify DTC P0070 is not set.
- If the DTC is not set
All OK.
- Go to next step: If DTC P0070 is set
- If the DTC is not set
- Perform all necessary programming and setup procedures for the control module: P16 Instrument Cluster
- Verify DTC P0070 is not set.
- If the DTC is not set
All OK.
- Go to next step: If DTC P0070 is set
- If the DTC is not set
- Perform all necessary programming and setup procedures for the control module: K9 Body Control Module
- Verify DTC P0070 is not set.
- If the DTC is not set
All OK.
- Go to next step: If DTC P0070 is set
- If the DTC is not set
- Perform all necessary programming and setup procedures for the control module: K20 Engine Control Module
- Verify DTC P0070 is not set.
- If the DTC is not set
All OK.
- Go to next step: If DTC P0070 is set
- If the DTC is not set
- Replace the control module: K20 Engine Control Module