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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (5 Of 5)) >> Diagnostic Information and Procedures >> Cylinder Power Balance Test >> Circuit/System Description

Circuit/System Description

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This procedure allows the technician to turned off each fuel injector using a scan tool. The change in engine speed or sound, when an injector is turned off, is an indicator how much power that cylinder contributes. If a cylinder generates less power than the others, that indicates a problem with either the compression or the injector.

The scan tool control function can also be used to find the cause of a misfire, engine knock, excessive smoke or rough running condition when no relevant DTCs are set.

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