Chevrolet R20 Windshield Washer Pump Guide for 1987-1988 Models
Everything you need to know to replace the windshield washer pump on your 1987-1988 Chevy R20 pickup.
- The replacement is a simple, DIY-friendly job that takes under 30 minutes.
- Modern aftermarket pumps from brands like Trico are an upgrade, providing a stronger, continuous spray.
- Before replacing the pump, test for power at the connector to rule out common electrical issues with the switch or wiper motor board.
- Expect to pay between $29 and $32 for a new aftermarket pump.
Is Your Windshield Washer Pump Failing?
A non-working washer system on your R20 can be frustrating and unsafe. Before you assume the pump is the problem, check the basics. Make sure you have fluid in the reservoir and that the spray nozzles aren't clogged with wax or debris. If those are fine, the pump is the next likely culprit.
Common Symptoms of a Bad Washer Pump:
- No Fluid Spray: The most obvious sign. When you activate the switch, the wipers move but no fluid comes out.
- Humming Noise, No Spray: You might hear the pump motor running, but if there's no spray, the pump's internal impeller may be broken or there could be a clog in the lines.
- No Sound from the Pump: If you don't hear a hum from the pump area when the switch is activated, the pump has likely failed electrically. However, this could also point to an electrical issue before the pump.
- Leaking Fluid: Puddles of washer fluid under the reservoir can indicate a cracked pump housing or a bad seal where the pump enters the reservoir.
Check Electricals First
On these 1980s GM trucks, electrical issues can sometimes seem like a bad washer pump. Forum users report that a faulty wiper switch, bad grounds, or even cracked solder joints on the wiper motor's internal circuit board can prevent the pump from getting power. It's wise to test for power at the pump's electrical connector with a multimeter before ordering a new part.
Choosing the Right Aftermarket Pump
For a vehicle like the 1987-1988 R20, a new OEM pump from a dealer is likely expensive or discontinued. Aftermarket parts offer excellent value and are readily available. Brands like Trico specialize in wiper and washer systems and are a common choice for these trucks. These modern pumps are typically a direct replacement that provides a superior, steady spray compared to the original pulsing design.
Pro Tip: Before you buy, look at the electrical connector on your truck's current pump. Some replacement pumps may have a slightly different plug style. Matching the connector style will ensure a plug-and-play installation.
Cost of Replacing a 1987-1988 R20 Windshield Washer Pump
Replacing the washer pump is an affordable repair, especially if you do it yourself. The job is simple and requires basic hand tools.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Pump | $29.34 - $31.96 |
| New OEM Pump | $64.00 - $132.00 |
| Shop Labor | $50 - $100 |
Frequently Asked Questions
How hard is it to replace the washer pump on my R20?
This is a very easy job, perfect for beginners. The pump pushes into the washer fluid reservoir, which is held to the inner fender by just two bolts. The entire process usually takes less than 30 minutes.
Where is the washer pump located?
The windshield washer pump is located at the bottom of the plastic washer fluid reservoir. You will find the reservoir mounted in the engine bay, typically on the driver's side inner fender.
Do I need to drain the washer fluid to replace the pump?
Yes. When you pull the old pump out of the reservoir, all the remaining fluid will drain out. It's best to either drain it into a clean container to reuse or have a bucket ready to catch it.
Are there any recalls for the washer pump on the 1987-1988 R20?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database show no specific recalls or technical service bulletins (TSBs) for the windshield washer pump on this vehicle.
Technical Specifications
OEM Part Numbers: 89025062 22054183 22039339 22086739 22122104
The pump is a small electric motor that press-fits into a rubber grommet on the bottom of the washer fluid reservoir. It uses a two-pin electrical connector.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chevrolet R20: