GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Yukon - 2WD 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 DTC B1023

Circuit Description

The DIC monitors the DIC internal switch signal circuits in order to perform various functions. The DIC detects a signal activation when the switch circuit is low.

Conditions for Running the DTC

The DIC detects a RAP 1 fuse supply voltage.

Conditions for Setting the DTC

The DIC detects that a switch signal circuit is low for greater than 30 seconds.

Action Taken When the DTC Sets

The DIC ignores the malfunctioning switch circuit.

Conditions for Clearing the DTC
    • The DTC becomes history when the fault is no longer present.
    • A history DTC clears after 100  malfunction free ignition cycles.
    • The DIC receives a clear code command from the scan tool.

Step

Action

Yes

No

Schematic Reference: Driver Information System Schematics

1

Did you perform the Driver Information Center Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Driver Information Systems

2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, observe the suspected DIC switch parameter in the DIC data list.
  4. Depress the suspect DIC switch.

Does the switch parameter change state?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Replace the DIC. Refer to Driver Information Center Replacement .

Did you complete the replacement?

Go to Step 4

--

4
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC.

Does the DTC reset?

Go to Step 2

System OK