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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1202 (Instrument Panel, Gages, And Console) >> Diagnostic Information and Procedures >> DTC B0521: Engine RPM Is At Least 7,400 RPM >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The number(s) below refer to the step number(s) on the diagnostic table.

  1. Tests the tachometer operation. All tachometer malfunctions must be diagnosed and corrected first.
    Fig 1: DTC B0521
    G01453737Courtesy of GENERAL MOTORS CORP.
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