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 MANUALSCADILLAC2000DEVILLE DHSREPAIR AND DIAGNOSISBODY & FRAMESEATSMEMORY SYSTEMSDIAGNOSTIC TESTSDTC B2858: TELESCOPE REARWARD SWITCH CIRCUIT MALFUNCTIONDIAGNOSTIC PROCEDURE
2000 Cadillac DeVille DHS
Diagnostic Procedure
2000 Cadillac DeVille DHSSECTION Diagnostic Procedure
- If power tilt/telescoping steering column diagnostic system check has been performed, go to next step. If power tilt/telescoping steering column diagnostic system check has not been performed, go to POWER TILT/TELESCOPING STEERING COLUMN DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC TESTS.
- Connect scan tool to Data Link Connector (DLC). See Figure . Turn ignition on. Using scan tool, select DTC INFORMATION list. Monitor CURRENT DIAGNOSTIC TROUBLE CODE(S) list. If DTC B2858 is current, go to next step. If DTC B2858 is not current, go to DIAGNOSTIC AIDS .
- Turn ignition off. Disconnect Steering Column Tilt/Telescoping Module (SCCM) connector C4. See Figure . Turn ignition on. Monitor CURRENT DIAGNOSTIC TROUBLE CODE(S) list. If DTC B2858 is current, go to next step. If DTC B2858 is not current, go to step 5 .
- Check for poor connections at tilt/telescoping steering column switch connector. If connections are okay, go to step 6 . If faulty connection is found and repaired, go to step 7 .
- Replace tilt/telescoping steering column switch. See STEERING COLUMN TILT/TELESCOPING SWITCH under REMOVAL & INSTALLATION. After repairs, go to step 7 .
- Replace Steering Column Tilt/Telescoping Module (SCCM). See STEERING COLUMN TILT/TELESCOPING MODULE under REMOVAL & INSTALLATION. After repairs, go to next step.
- Use scan tool to clear DTCs. Recheck power tilt/telescoping steering column system operation. Recheck for DTC. If DTC resets, go to step 2 . If DTC does not reset, repair is complete.
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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.