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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P205B - P2BAA) And Symptoms) >> Diagnostic Information And Procedures >> Fuel Leak Diagnosis >> Diagnostic Aids

Diagnostic Aids

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Fluorescent dye assists in locating leaks in the system. A high-intensity black light will make the dye glow. - Green or Yellow

Illuminate the area (s) of concern. For example:

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