Non-Hybrid Greater than/Equal to 3900 kg (8600 lb) GVW

StabiliTrak Indicator Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provides an overview of each diagnostic category.

Circuit Description

The instrument panel cluster (IPC) illuminates the StabiliTrak indicator during the IPC bulb check or when the electronic brake control module (EBCM) detects a fault and sends a serial data message to the IPC commanding the indicator ON.

Reference Information
Schematic Reference

Antilock Brake System Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

ABS Description and Operation (Without JL4) (ABS (Without JL4))ABS Description and Operation (With JL4) (ABS (With JL4))
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning)for scan tool information

Diagnostic Aids

Diesel Engine with RPOs (JL4, K76 and LMM) ONLY

A condition may result in a stored history DTC C0900 with a Service StabiliTrak and Trac Off Message. This DTC can set if the engine is immediately free revved at half throttle or more, after a cold start, or after immediate cold engine drive off not allowing the engine to warm up after the Wait to Start lamp goes off. The DTC may be stored in history due to a sudden spike in the charging system that exceed 16 volts causing the EBCM to store the DTC and display the messages, and no repairs are necessary. Please refer the customer to the operating and starting of a diesel engine in the Owner's Manual under Features and Controls "Starting the Diesel Engine" for DURAMAX (R) Diesel Engine.

Circuit/System Verification

1. Ignition ON, with a scan tool command the IPC display test ON and OFF. The StabiliTrak indicator should turn ON and OFF.

• If the indicator does not turn ON and OFF, replace the IPC.

2. Observe the scan tool BCM Traction Control Switch parameter while pressing and releasing the traction control switch. The reading should change between Active and Inactive.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the traction control switch.
2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm between the ground circuit terminal 3 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify the scan tool Traction Control Switch parameter is Inactive.

• If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the BCM.

4. Install a 3A fused jumper wire between the signal circuit terminal 1 and the ground circuit terminal 3. Verify the scan tool Traction Control Switch parameter is Active.

• If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.

5. If all circuits test normal, test or replace the traction control switch.

Component Testing

1. Ignition OFF, disconnect the harness connector at the traction control switch.
2. Test for infinite resistance between the signal terminal 3 and the ground terminal 1 with the switch in the open position.

• If not the specified value, replace the traction control switch.

3. Test for less than 3 ohms between the signal terminal 3 and the ground terminal 1 with the switch in the closed position.

• If greater than the specified range, replace the traction control switch.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Electronic Traction Control Switch Replacement (Non-Hybrid Less than 3900 kg (8600 lb) GVW)
* Control Module References (Programming and Relearning)for BCM or IPC replacement, programming and setup