Symbols used in vehicle electrical diagrams (Chevrolet Tahoe 1)

Before troubleshooting, check the condition of the fuses and circuit breakers. Make sure the battery is fully charged and visually inspect the condition of the wires and connectors. When using the electrical diagram, take into account the color designations of the wire insulation.

Color designations of wire insulation used in the electrical circuit diagram

• BLK — black
• BRN - brown
• SNK - checkerboard pattern
• CR - cross stitch pattern
• GRN - green
• ORN - orange
• GRY — gray
• PPL - purple
• TR - fine line pattern
• YEL — yellow
• WHT — white
• BLU — blue
• STR - stripe pattern
• PNK - pink
• DK - dark
• LT — light

Symbols used in vehicle electrical diagrams