With a Digital Multimeter (DMM)
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.
- Set the DMM to the Ω position.
- Disconnect the power feed (i.e. fuse, control module) from the suspect circuit.
- Disconnect the load.
- Select the MIN MAX function on the DMM.
- Connect one lead of the DMM to one end of the circuit to be tested.
- Connect the other lead of the DMM to the other end of the circuit.
- If the DMM displays low or no resistance, the circuit has good continuity.