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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 1.5L (LYX)) >> Diagnostic Information And Procedures >> Engine Compression Test >> Special Tools

Special Tools

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EN-51749  Compression Gauge Tester Kit

For equivalent regional tools, refer to Special Tools .

A compression pressure test of the engine cylinders determines the condition of the piston rings, the valves and the head gaskets.

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