LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1089 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B257A >> Diagnostic Fault Information

Diagnostic Fault Information

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.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Flash to Pass Switch Signal 1 1 1 -
Headlamp High Beam Relay Control 1 1 B2580 00, 1 -
Headlamp Low Beam Relay Control 1 1 B2575 00, 1 -
Headlamp Switch High Beam Signal 1 1 1 -
Headlamp Switch Headlamps ON Signal B257A 00, 1 1 1 -
Headlamp Switch Headlamps OFF Signal B257A 00, 1 1 1 -
Park Lamp Switch Signal 2 2 2 -
LF High Beam Headlamp Voltage Supply 1 1 1 -
LF Low Beam Headlamp Voltage Supply 1 1 1 -
RF High Beam Headlamp Voltage Supply 1 1 1 -
RF Low Beam Headlamp Voltage Supply 1 1 1 -
LF Headlamp Ground - 1 - -
RF Headlamp Ground - 1 - -
Turn Signal/Multifunction Switch Ground - 1, 2 - -
  1. Headlamps Malfunction
  2. Park, License, and/or Tail Lamps Malfunction