Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 617 (ANTILOCK BRAKE SYSTEM AND TRACTION CONTROL SYSTEM)DESCRIPTION AND OPERATIONABS DESCRIPTION AND OPERATIONTRACTION CONTROL SYSTEM INDICATOR(S)TRAC OFF
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Trac Off
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Trac Off
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The IPC illuminates the TRAC OFF indicator when:
- The electronic brake control module (EBCM) inhibits the traction control system. The IPC receives a class 2 message from the EBCM requesting illumination.
- The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
The IPC sends a class 2 message to the radio in order to activate an audible warning.
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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.