Component Testing

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/Vehicle - Off
Remove the component: Q8 Control Solenoid Valve Assembly
Verify a condition does not exist with the component: Contamination with metallic debris
- If a condition exists
  Repair or replace as necessary.
- Go to next step: If no condition exists
Verify the resistance is within the specified range for each solenoid valve. - Refer to: Control Solenoid Valve and Transmission Control Module Assembly Inspection
- If the resistance is not within range
  Replace the component: Q8 Control Solenoid Valve Assembly
- Go to next step: If the resistance is within range
Install Special Tool DT-48616-10 Adapter Harness @ Q8 Control Solenoid Valve Assembly & Vehicle wiring harness X1
Connect the electrical connector: B15 Transmission Internal Mode Switch
Ignition - On / Vehicle - In Service Mode
Perform the scan tool control function: Pressure Control Solenoid Valve 3 - On and Off
Verify the scan tool parameter:
- Pressure Control Solenoid Valve 3 Control Circuit High Voltage Test Status = OK or Not Run
- Pressure Control Solenoid Valve 3 Control Circuit Low Voltage Test Status = OK or Not Run
- Pressure Control Solenoid Valve 3 Control Circuit Open Test Status = OK or Not Run
- If not the specified state
  Replace the component: Q8 Control Solenoid Valve Assembly
- Go to next step: If the specified state
All OK.