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 MANUALSGMC2021TERRAIN SLT, 4WDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER SYSTEM AND WASHER SYSTEM
2021 GMC Terrain SLT, 4WD
Wiper System And Washer System
2021 GMC Terrain SLT, 4WDSECTION Wiper System And Washer System
- Specifications
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- DTC B370A
- DTC B370B
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3715 or B3875
- DTC B3811
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3873
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- Symptoms - Wiper/Washer Systems
- Windshield Wiper System Malfunction
- Low Washer Fluid Indicator Malfunction
- Washer Malfunction
- Rain Sensor Malfunction
- Rear Wiper System Malfunction
- Rear Washer System Malfunction
- Repair Instructions
- Windshield Wiper and Windshield Washer Switch Replacement (Equinox)
- Windshield Wiper and Windshield Washer Switch Replacement (Terrain)
- Windshield Washer Nozzle Hose Replacement
- Windshield Washer Nozzle Replacement
- Rear Window Washer Nozzle Replacement
- Washer Hose Repair
- Windshield Washer Pump Hose Replacement (Front)
- Windshield Washer Pump Hose Replacement (Rear)
- Windshield Washer Solvent Container Replacement (Chevrolet)
- Windshield Washer Solvent Container Replacement (GMC)
- Windshield Washer Pump Replacement
- Rear Window Washer Pump Replacement
- Windshield Washer Solvent Container Level Sensor Replacement
- Air Inlet Grille Panel Replacement
- Air Inlet Grille Panel Extension Replacement (Left Side)
- Air Inlet Grille Panel Extension Replacement (Right Side)
- Air Inlet Grille Panel Water Deflector Replacement
- Windshield Wiper Arm Replacement
- Rear Window Wiper Arm Replacement
- Windshield Wiper Blade Replacement
- Rear Window Wiper Blade Replacement
- Windshield Wiper Motor Replacement
- Rear Window Wiper Motor Replacement
- Rear Window Wiper Cover Replacement
- Windshield Wiper Transmission Replacement
- Rear Window Wiper Motor Grommet Replacement
- Windshield Multifunction Sensor Mount Bracket Cover Replacement
- Windshield Multifunction Sensor Mount Bracket Cover Insert Replacement
- Windshield Glass Cleaning
- Wiper Blade Element Cleaning
- Wiper Chatter Repair
- Windshield Wiper Arm Adjustment
- Description and Operation
- Wiper/Washer System Description and Operation
- Wiper/Washer System Components
- Windshield Wiper System
- Front Wiper Block Diagram
- Windshield Washer System
- Washers System Block Diagram
- Rain Sense Mode and Rain Sense Indicator
- Rain Sensor Block Diagram
- Headlamp Washer System
- Front Washer-Washer Fluid Level Block Diagram
- Rear Wiper System
- Rear Washer System
- Rear Washer Block Diagram
- Wiper/Washer System Description and Operation
- Special Tools and Equipment
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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.