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 MANUALSCHEVROLET2006SUBURBAN K1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 542 (STEERING WHEEL AND STEERING COLUMN)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B2857DIAGNOSTIC AIDS
2006 Chevrolet Suburban K1500, 5.3 Z
Diagnostic Aids
2006 Chevrolet Suburban K1500, 5.3 ZSECTION Diagnostic Aids
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 following conditions may cause an intermittent malfunction.
- There is an intermittent short to ground in the steering column telescope forward switch signal circuit.
- The steering column switch is shorted to ground internally or is sticking.
- The steering column switch was closed for longer than 20 seconds.
- If steering column telescope forward switch signal circuit is shorted to ground or the steering column switch is stuck closed, the steering column will remain in the full In position at all times.
- Using a scan tool, select scan tool inputs and monitor steering column switch status. If the scan tool displays In, disconnect the steering column switch. If the display changes to Idle, replace the switch. If the display remains In check steering column telescope forward switch signal circuit for a short to ground.
- If the DTC does not reset after the code is cleared, then the problem may be intermittent. Perform the tests shown while moving related wiring and connectors. This can often cause the malfunction to occur. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
- Activate the steering column switch numerous times while monitoring the status on the scan tool to see if it sticks intermittently.
- Can be caused by holding switch down for more than 20 seconds.
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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.