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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1727 (Instrument Panel, Gages, And Console) >> Diagnostic Information and Procedures >> Tachometer Inaccurate or Inoperative

Tachometer Inaccurate or Inoperative

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Tachometer Inaccurate or Inoperative

Step Action Yes No
Schematic Reference: Instrument Cluster Schematics 
1 Did you perform the Instrument Cluster Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Instrument Cluster 
2
  1. Install a scan tool.
  2. Start the engine.
  3. With the scan tool, observe the Engine Speed parameter in the Powertrain Ignition data list.
Does the Engine Speed parameter match the tachometer display?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Replace the IPC. Refer to Instrument Panel Cluster (IPC) Replacement .
Did you complete the replacement?		 Go to Step 4  -
4 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
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