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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1346 (Immobilizer System) >> Diagnostic Information and Procedures >> Hood Ajar Indicator/Message Malfunction >> Component Testing >> Hood Ajar Switch

Hood Ajar Switch

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the hood ajar switch.
  2. With the switch in the hood closed position, test for infinite resistance between the ground terminal C and the signal terminal A.
    • If not infinite, replace the hood ajar switch.
  3. Test for less than 2 ohms between the ground terminal C and the signal terminal B.
    • If greater than the specified range, replace the hood ajar switch.
  4. With the switch in the hood open position, test for infinite resistance between the ground terminal C and the signal terminal B.
    • If not infinite, replace the hood ajar switch.
  5. Test for less than 2 ohms between the ground terminal C and the signal terminal A.
    • If greater than the specified range, replace the hood ajar switch.
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