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 42 (FIXED AND MOVEABLE WINDOW SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER WINDOWS MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Circuit/System Verification
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Circuit/System Verification
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 - On / Vehicle - In Service Mode
- Operate the component: S79D Window Switch - Driver - Pressed & Pulled
- Verify the component works as specified: M74D Window Motor - Driver = Up & Down
- If not the specified state
Refer to: Circuit/System Testing - Test 1
- Go to next step: If the specified state
- If not the specified state
- Operate the component: Passenger Window Switch @ S79D Window Switch - Driver - Pressed & Pulled
- Verify the component works as specified: M74P Window Motor - Passenger = Up & Down
- If not the specified state
Refer to: Circuit/System Testing - Test 2
- Go to next step: If the specified state
- If not the specified state
- Operate the component: S79P Window Switch - Passenger - Pressed & Pulled
- Verify the component works as specified: M74P Window Motor - Passenger = Up & Down
- If not the specified state
Refer to: Circuit/System Testing - Test 3
- Go to next step: If the specified state
- If not the specified state
- 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.