Interior Backlighting Does Not Dim

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Interior Backlighting Does Not Dim
Interior Backlighting Does Not Dim

Step Action Yes No
Schematic Reference: Interior Lights Dimming Schematics 
Connector End View Reference: Lighting Systems Connector End Views  or Computer/Integrating Systems Connector End Views in Computer/Integrating Systems
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 Verify that the interior backlighting does not dim.
Does the interior backlighting operate normally?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Test for a high resistance, an open, a short to ground, or a short to voltage in the following circuits. Refer to Circuit Testing andWiring Repairs in Wiring Systems.
  • 5-volt reference
  • The dimming input
  • The dimming return

Did you find and correct a condition?
Go to Step 6  Go to Step 4 
4 Inspect for poor connections at the harness connector of the headlamp switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 6  Go to Step 5 
5 Replace the headlamp switch. Refer to Headlamp Switch Replacement .
Did you complete the replacement?
Go to Step 6  -
6 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 3 
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.