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 MANUALSCHEVROLET1989CAPRICE BASE, 4.3 Z, 700R4/MD8REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER/WASHER SYSTEM (RWD)
1989 Chevrolet Caprice Base, 4.3 Z, 700R4/MD8
Wiper/Washer System (RWD)
1989 Chevrolet Caprice Base, 4.3 Z, 700R4/MD8SECTION Wiper/Washer System (RWD)
- Description & Operation
- Adjustments
- Trouble Shooting
- On-Vehicle
- Off-Vehicle
- Notes
- Wiper Inoperative (Motor Does Not Run)
- Wiper Won't Shut Off (Crank Arm Rotates 390 Degrees)
- Wiper Will Not Shut Off (Accompanied By A Loud Knock)
- Wiper Has High Speed Only
- Wiper Has Low Speed Only
- Wiper Has Excessive Speed In High (Low Speed Normal)
- Wiper Stops At Random W/No Return To Park Position
- Intermittent Operation
- No Apparent Trouble On Bench Test But Fails Occasionally On Vehicle
- Testing
- Multiplex Pulse Wiper System
- Notes
- Wipers Inoperative
- Wipers Will Not Shut Off (Blades Operate In Normal Wiper Pattern)
- Wiper Has Low Speed Only (Operates Okay in Delay Mode & Shuts Off Correctly)
- Wiper Has High Speed Only (Will Not Delay Between Wipes)
- Blades Cycle In And Out Of Park Position (When Wiper Is Shut Off)
- Wipers Run Continuously In Delay Mode (No Delay Between Wipes)
- Wipers Inoperative In Delay Mode (Wipers Function Only In Low Or High Speed)
- Intermittent Wiper Operation (Blades Stop At Random Positions With Wiper Switch In Low Or High Positions)
- Standard Wiper System
- Multiplex Pulse Washer System
- Standard Washer System
- Wiper Switch & Harness
- Relay Wiper Switch
- Multiplex Pulse Wiper System
- Removal & Installation
- Wiring Diagrams
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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.