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Park Lights Will Not Turn Off

  1. Turn ignition on. Using scan tool, read PARK LAMP SWITCH SENSE. If scan tool displays PARK LAMP SW: CLOSED, go to next step. If scan tool does not display PARK LAMP SW: CLOSED, go to step  4 .
  2. Turn ignition off. Disconnect headlight switch connectors. Disconnect Body Control Module (BCM) connector "A". BCM is located with junction block under driver's side instrument panel. See Figure . Measure resistance between ground and terminal No. 8 (Light Green/White wire) at headlight switch 8-pin connector. See Figure . If resistance is less than 5 ohms, repair short to ground in Light Green/White wire. If resistance is 5 ohms or more, go to next step.
  3. Using scan tool, read PARK LAMP SWITCH SENSE. If scan tool displays PARK LAMP SW: CLOSED, replace BCM. If scan tool does not display PARK LAMP SW: CLOSED, replace headlight switch.
  4. Remove park light relay from Power Distribution Center (PDC). See Figure . If park lights turn off, go to next step. If park lights do not turn off, repair short to voltage in park light relay output circuit.
  5. Measure resistance between ground and terminal No. 85 (Violet wire) at park light relay socket in PDC. See Figure . If resistance is 100 ohms or more, replace park light relay. If resistance is less than 100 ohms, repair short to ground in Violet wire between park light relay and junction block.
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