LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1577 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2530: Front Foglamps Control Circuit >> Test Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2. Listen for an audible click when the front fog lamp relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
  2. 3. Tests for voltage at the coil side of the front fog lamp relay.
  3. 4. Verifies that the body control module (BCM) is providing ground to the front fog lamp relay.
  4. 5. Tests if ground is constantly being applied to the front fog lamp relay.
  5. 6. Tests if there is opposing voltage present or an open in the front fog lamp relay control circuit.
  6. 12. After replacement of the BCM you must calibrate the new module for proper operation.
Fig 1: DTC B2530 - Diagnostic Chart
G01640383Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals