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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1109 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> Starter Solenoid Does Not Click >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the starter relay.
  2. Test for 60-180 ohms of resistance between terminals 85 and 86.
    • If the resistance is not within the specified range, replace the relay.
  3. Test for infinite resistance between the following terminals:
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
    • If not the specified value, replace the relay.
  4. Install a 20A fused jumper wire between terminal 85 and 12 volts. Install a jumper wire between terminal 86 and ground. Test for less than 2.0 ohms of resistance between terminals 30 and 87.
    • If greater than the specified range, replace the relay.