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 49 (WIPER SYSTEM AND WASHER SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B370BCOMPONENT TESTING
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
Component Testing
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Component Testing
WARNING: This page is about a different car, the 2018 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.
Windshield Wiper/Washer Switch
- Ignition OFF, disconnect the harness connector at the S82 Windshield Wiper/Washer Switch.
- Test for infinite resistance between the signal terminal 4 and the low reference terminal 2 with the rear wiper switch in the OFF position.
- If less than infinite resistance
Replace the S82 Windshield Wiper/Washer Switch.
- Go to next step: If infinite resistance
- If less than infinite resistance
- Verify the resistance is within the range specified below between the signal circuit terminal 4 and the low reference circuit terminal 2 by cycling the switch between Rear Wiper position and Rear Washers position.
- Rear Wiper : 624 - 644 Ω
- Rear Wiper Sweep : 1.8 - 2.2 kΩ
- Rear Washer : 5.9 - 6.4 kΩ
- If not within the specific range
Replace the S82 Windshield Wiper/Washer Switch.
- Go to next step: If within the specific range
- All OK
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.