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 MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 137 (ANTILOCK BRAKE SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C0035-C0050CIRCUIT/SYSTEM TESTING
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
Circuit/System Testing
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2019 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF and all vehicle systems OFF, disconnect the harness connectors at the appropriate B5 Wheel Speed Sensor and the harness connector at the K17 Electronic Brake Control Module, ignition ON.
- Test for less than 1 V between the appropriate K17 Electronic Brake Control Module harness connector terminals listed below and ground:
- B5LF Wheel Speed Sensor - Left Front - terminal 35 and terminal 36
- B5LR Wheel Speed Sensor - Left Rear - terminal 29 and terminal 30
- B5RF Wheel Speed Sensor - Right Front - terminal 10 and terminal 11
- B5RR Wheel Speed Sensor - Right Rear - terminal 3 and terminal 4
- If 1 V or greater
Repair the short to voltage on the circuit.
- Go to next step: If less than 1 V
- Ignition OFF.
- Test for infinite resistance between the K17 Electronic Brake Control Module harness connector terminals listed below and ground:
- B5LF Wheel Speed Sensor - Left Front - terminal 35 and terminal 36
- B5LR Wheel Speed Sensor - Left Rear - terminal 29 and terminal 30
- B5RF Wheel Speed Sensor - Right Front - terminal 10 and terminal 11
- B5RR Wheel Speed Sensor - Right Rear - terminal 3 and terminal 4
- If less than infinite resistance
Repair the short to ground on the circuit.
- Go to next step: If infinite resistance
- Test for less than 2 Ω between the B5 Wheel Speed Sensor harness connector terminal 1 and the K17 Electronic Brake Control Module harness connector terminal listed below:
- B5LF Wheel Speed Sensor - Left Front - terminal 35
- B5LR Wheel Speed Sensor - Left Rear - terminal 29
- B5RF Wheel Speed Sensor - Right Front - terminal 10
- B5RR Wheel Speed Sensor - Right Rear - terminal 3
- If 2 Ω or greater
Repair the open/high resistance in the circuit.
- Go to next step: If less than 2 Ω
- Test for less than 2 Ω between the B5 Wheel Speed Sensor harness connector terminal 2 and the K17 Electronic Brake Control Module harness connector terminal listed below:
- B5LF Wheel Speed Sensor - Left Front - terminal 36
- B5LR Wheel Speed Sensor - Left Rear - terminal 30
- B5RF Wheel Speed Sensor - Right Front - terminal 11
- B5RR Wheel Speed Sensor - Right Rear - terminal 4
- If 2 Ω or greater
Repair the open/high resistance in the circuit.
- Go to next step: If less than 2 Ω
- Replace the B5 Wheel Speed Sensor.
- Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
- If the DTC sets
Replace the K17 Electronic Brake Control Module.
- Go to next step: If the DTC does not set
- If the DTC sets
- All OK.
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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.