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 P0641, P0651 is not set.
- If the DTC is set
Refer to: DTC P0641, P0651, P0697, or P06A3
- Go to next step: If the DTC is not set
- If the DTC is set
- Engine - Running
- Verify DTC P0341 is not set.
- If the DTC is set
Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
- If the DTC is set
- Verify the scan tool parameter: Camshaft Position Active Counter = Increments
- If the parameter value does not increment
Refer to: Circuit/System Testing
- Go to next step: If the parameter value increments
- If the parameter value does not increment
- Verify the scan tool parameter: Camshaft Position Active Counter = Increments
Perform the action while monitoring the parameter:
- Wiggle the harness and connector: B23 Camshaft Position Sensor
- Wiggle the harness and connector: K20 Engine Control Module
- If the parameter value does not increment
Repair as necessary - Wiring / Terminal(s) / Electrical Connector(s)
- Go to next step: If the parameter value increments
- 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.