LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1572 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Troubleshooting with a Test Lamp >> Testing

Troubleshooting with a Test Lamp: Testing

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

To properly operate this tool use the following procedures.

When testing for voltage:

  1. Attach one lead to ground.
  2. Touch the other lead to various points along the circuit where voltage should be present.
  3. When the bulb illuminates, there is voltage at the point being tested.

When testing for ground:

  1. Attach one lead to battery positive voltage.
  2. Touch the other lead to various points along the circuit where ground should be present.
  3. When the bulb illuminates, there is ground at the point being tested.
scientia non olet · About LEMON Manuals