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.
Component Testing
2018 Chevrolet Tahoe LT, 4WD, GasSECTION Component Testing
Rear Windshield Washer Pump
- Install a 15 A fused jumper wire between the B+ terminal 1 and 12 V. Install a jumper wire between the control terminal 2 and ground.
- Verify the G19 Rear Window Washer Pump activates.
- If the G19 Rear Window Washer Pump does not activate.
Replace the G19 Rear Window Washer Pump.
- Go to next step: If the G19 Rear Window Washer Pump does activate.
- If the G19 Rear Window Washer Pump does not activate.
- All OK
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:
- • 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.