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 MANUALSCHEVROLET2025SUBURBAN LS, RWDREPAIR AND DIAGNOSISSTEERINGSTEERING WHEEL AND STEERING COLUMNDIAGNOSTIC INFORMATION AND PROCEDURESDTC C10CECIRCUIT/SYSTEM TESTING
2025 Chevrolet Suburban LS, RWD
Circuit/System Testing
2025 Chevrolet Suburban LS, RWDSECTION Circuit/System Testing
- Ignition OFF, disconnect the X1 connector at the K99 Steering Column Tilt Wheel and Telescope Control Module and the connector at the S71 Steering Column Tilt Wheel and Telescope Switch. It may take up to 2 min for all vehicle systems to power down.
- Ignition ON.
- Test for infinite resistance between the signal circuit terminals listed below and ground at the S71 Steering Column Tilt Wheel and Telescope Switch harness.
- Terminal A
- Terminal B
- Terminal C
- Terminal F
- If less than infinite resistance
Repair the short to ground on the circuit.
- Go to next step: If infinite resistance
- Test for infinite resistance between the ground circuit terminal G and each signal circuit terminal listed below at the S71 Steering Column Tilt Wheel and Telescope Switch, with the switch in the released position.
- Terminal A
- Terminal B
- Terminal C
- Terminal F
- If less than infinite resistance
Replace the S71 Steering Column Tilt Wheel and Telescope Switch.
- Go to next step: If infinite resistance
- Test for less than 2 Ω between the ground circuit terminal G and each signal circuit terminal listed below at the S71 Steering Column Tilt Wheel and Telescope Switch with the switch in the pressed position.
- Terminal A
- Terminal B
- Terminal C
- Terminal F
- If 2 Ω or greater
- Replace the S71 Steering Column Tilt Wheel and Telescope Switch.
- Operate the system under the conditions for running the DTC. Verify the DTC does not reset.
- If the DTC resets, Replace the K99 Steering Column Tilt Wheel and Telescope Control Module.
- Go to next step: If the DTC does not reset
- All OK.
- Go to next step: If less than 2 Ω
- Replace the K99 Steering Column Tilt Wheel and Telescope Control Module.
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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.