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 MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 46 (WIPER SYSTEM AND WASHER SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B3922COMPONENT TESTING
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Component Testing
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Component Testing
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X3 harness connector at the turn signal multifunction switch.
- With the wiper switch in the HIGH position, test for less than 2 ohms between the low reference terminal M and the signal terminal K.
- If greater than the specified range, replace the windshield wiper washer switch.
- While cycling the wiper switch through each delay and speed position, test for the specified resistance between the low reference terminal M and the signal terminal N.
IMPORTANT:
If the switch tests open in any switch position other than Off, test the signal circuits for a short to voltage before replacing the switch.
Wiper Switch Values
| Switch Position | Resistance |
|---|---|
| Off | Infinite |
| Mist | 300 - 364 Ξ© |
| Delay 1 | 3.48k - 4.25k Ξ© |
| Delay 2 | 2.52k - 3.08k Ξ© |
| Delay 3 | 1.78k - 2.18k Ξ© |
| Delay 4 | 1.17k - 1.44k Ξ© |
| Delay 5 | 697 - 851 Ξ© |
| Low | 300 - 364 Ξ© |
| High | 300 - 364 Ξ© |
- If any switch position is not within the specified range, replace the turn signal multifunction switch.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.