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Home >> Hummer >> 2009 >> H3T Base, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel Displays And Gages >> Diagnostic Information and Procedures >> Tachometer Inaccurate or Inoperative >> Circuit/System Verification

Circuit/System Verification

Engine ON, verify the scan tool Engine Speed parameter matches the tachometer display.

If the Engine Speed parameter does not match the tachometer display, replace the IPC.

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