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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 542 (STEERING WHEEL AND STEERING COLUMN)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B2592TEST DESCRIPTION
2006 Chevrolet Suburban K1500, 5.3 Z

Test Description

2006 Chevrolet Suburban K1500, 5.3 ZSECTION Test Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  Tests for an open in the BCM2 fuse. BCM2 fuse supplies power to the BCM to operate the steering column lock motor.
  2. 3:  Tests for an open in the BCM battery positive voltage circuit at the BCM.
  3. 4:  Tests for an open or short to ground in the BCM battery positive voltage circuit at the steering column lock relay.
  4. 5:  Tests for an open or short to ground in the steering column lock or unlock circuit. If steering column lock or unlock circuit is shorted to ground the BCM2 fuse will open.
  5. 9:  When the BCM is replaced, use a scan tool to perform the BCM RPO Reprogramming procedure.
DTC B2592

Step Action Yes No
Schematic Reference:  Column/Ignition Lock Schematics  
Connector End View Reference:  Steering Wheel and Column Connector End Views  
1 Did you perform the Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Steering Wheel and Column 
2  Inspect the BCM2 fuse for an open.
Is the BCM2 fuse open?		 Go to Step 4  Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Disconnect the BCM connectors.
  3. Turn ON the ignition, with the engine OFF.
  4. Probe the BCM battery positive voltage circuit at the BCM connector with a test lamp that is connected to a good ground.
Does the test lamp illuminate?		 Go to Step 6  Go to Step 4 
4  Test the BCM battery positive voltage circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 10  Go to Step 5 
5  Test the steering column lock and unlock circuits for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 10  Go to Step 7 
6 Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 10  Go to Step 9 
7 Inspect for poor connections at the harness connector of the steering column lock. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 10  Go to Step 8 
8 Replace the steering column lock motor. Refer to Steering Wheel Theft Deterrent Lock Replacement (Telescoping)  or Steering Wheel Theft Deterrent Lock Replacement (Manual) .
Did you complete the replacement?		 Go to Step 10  -
9 
IMPORTANT: Perform the BCM RPO Reprogram procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.
Replace the BCM. Refer to Body Control Module Replacement in Body Control System.Did you complete the replacement?		 Go to Step 10  -
10
  1. Use the scan tool in order to clear the DTCs.
  2. Clear the BCM steering column lock fail enable mode by disconnecting BCM1 & IPC fuse for 15 seconds.
  3. Operate the vehicle within the Conditions for Setting the DTC as specified in the supporting text.
Does the DTC reset?		 Go to Step 2  System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.