GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Seville 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Tachometer Inaccurate

Step

Action

Value(s)

Yes

No

1

Was Instrument Cluster System Check performed?

--

Go to Step 2

Go to Instrument Cluster System Check

2
  1. Ignition switch.
  2. Connect a scan tool.
  3. Select IPC Data Menu.
  4. Start engine.

Is the Engine Speed reading on the Scan Tool the same as the indicated Engine Speed on the Tachometer?

--

Go to Engine Controls

Go to Step 3

3

Replace the Instrument Cluster (IPC). Refer to Instrument Cluster Replacement .

Is the Instrument Cluster (IPC) replacement complete?

--

Go to Instrument Cluster System Check

--