GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Sonoma Pickup - 2WD 🢒 Body and Accessories 🢒 Theft Deterrent 🢒 SECURITY Indicator Always On or Flashing

Step

Action

Value(s)

Yes

No

1

Did you perform the Theft Deterrent Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Theft Deterrent

2
  1. Turn ON the ignition with the engine OFF.
  2. With a scan tool, command the SECURITY message ON and OFF.

Does the Security message turn ON and OFF with each command?

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Go to Diagnostic System Check - Body Control System

Go to Step 3

3

Replace the Instrument Cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Did you complete the replacement?

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Go to Diagnostic System Check - Instrument Cluster

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