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With a DMM

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the power feed (i.e. fuse, control module) from the suspect circuit.
  2. Disconnect the load.
  3. Set the rotary dial of the DMM to the Ω position.
  4. Connect 1 lead of the DMM to 1 end of the circuit to be tested.
  5. Connect the other load of the DMM to a good ground.
  6. If the DMM does NOT display infinite resistance (OL), there is a short to ground in the circuit.
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