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 P0851 is not set.
- If the DTC is set
Refer to: DTC P0851
- If the DTC is set
- Perform the following action: Range Selector Lever Cable Adjustment
- Operate the component: S3 Transmission Shift Lever - Select each position
Verify the scan tool parameter: Internal Mode Switch A/B/C/P = The switch states match the values given in the table. - Refer to: Transmission Internal Mode Switch Logic
- If not the specified state
Refer to: Circuit/System Testing
- Go to next step: If the specified state
- If not the specified state
- Operate the component: S3 Transmission Shift Lever - Select each position
- { R, D, M } Verify the scan tool parameter: Park/Neutral Position Switch @ Engine Control Module = In Gear
- { P, N } Verify the scan tool parameter: Park/Neutral Position Switch @ Engine Control Module = Park/Neutral
- If not the specified state
Refer to: Circuit/System Testing
- Go to next step: If the specified state
- 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.