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 MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1724 (REAR WHEEL STEERING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B3593: MODE SELECT SWITCH SIGNAL CIRCUIT IS OPEN OR SHORTED TO GROUNDTEST DESCRIPTION
2004 Oldsmobile Bravada AWD
Test Description
2004 Oldsmobile Bravada AWDSECTION Test Description
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. 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.
- 2. The normal state of the switch is the state of the switch input before activation. The terminology used by the scan tool is OFF.
- 3. Tests for the proper operation of the switch in the normally open position.
- 4. Tests for the proper operation of the switch in the closed position.
- 8. Tests the 5 volt reference signal circuit for an open or a short to ground.
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.