A Guide to the 2003-2009 Cadillac CTS Windshield Washer Pump
If your washers have stopped spraying, this guide will help you find the right replacement pump for your first-generation CTS.
- The most common sign of failure is no fluid spray combined with no humming sound from the pump.
- Replacement is a DIY-friendly task that requires accessing the pump by pulling back the passenger-side wheel well liner.
- Aftermarket pumps from brands like Trico are a cost-effective alternative to more expensive OEM parts.
- Verify you are buying the windshield washer pump, as some CTS models have a separate pump for headlight washers.
Is Your Cadillac CTS Washer Pump Failing?
A failed windshield washer pump is a common issue on many vehicles as they age. For the 2003-2009 Cadillac CTS, the signs of failure are straightforward. If you activate the washers and nothing happens, the pump is a likely suspect, especially if you don't hear the familiar humming sound it usually makes. Before you decide to replace the pump, it's wise to check a few other things first. Make sure your washer fluid reservoir is full, check that the washer nozzles aren't clogged with wax or debris, and inspect the washer pump fuse to ensure it hasn't blown.
Known Issues & Recalls
As of early 2026, there are no active recalls or widespread Technical Service Bulletins (TSBs) from GM or the NHTSA specifically for the windshield washer pump on the 2003-2009 Cadillac CTS. Failure is typically due to normal wear and tear over time.
Choosing a New Aftermarket Washer Pump
When shopping for a replacement, you'll find both Original Equipment (OEM) and aftermarket options. An OEM pump from a GM dealer is guaranteed to fit perfectly but will cost significantly more. Aftermarket brands, like Trico, offer a more affordable solution that meets or exceeds original specifications. Trico pumps are designed for easy, direct-fit installation without needing any modifications. While most aftermarket parts work well, some owners have reported issues with incorrect fitment from generic parts stores, so it's crucial to confirm the part number matches your specific CTS model year before purchasing.
Pro Tip: Some 2003-2009 Cadillac CTS models were equipped with headlight washers, which use a second, separate pump. Be sure to order the correct pump for the windshield, not the headlights.
Windshield Washer Pump Replacement Cost
The cost to replace the washer pump on a 2003-2009 CTS depends on whether you do it yourself or hire a mechanic. The part itself is affordable, but professional labor can add to the total.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Pump | $29.34 - $34.26 |
| New OEM Pump | $46 - $87 |
| Shop Labor | $72 - $106 |
| Total Professional Replacement | $118 - $193 |
Frequently Asked Questions
Where is the washer pump located on a 2003-2009 CTS?
The windshield washer pump is attached to the bottom of the washer fluid reservoir. The reservoir is located in the front of the car, underneath the passenger-side headlight and behind the bumper cover.
🎬 Watch: See exactly where the pump is located on your CTS.Is it difficult to replace the washer pump myself?
For a DIYer with basic tools, this is a manageable job. The most common method involves turning the front wheels, removing a few clips from the passenger-side fender liner, and pulling it back to access the pump. You do not need to remove the entire front bumper. 🎬 See this replacement walkthrough for a quick and easy DIY repair. The pump simply pulls out from the reservoir and the new one pushes into the same spot.
🎬 Watch: A step-by-step guide to replacing your washer fluid pump.How do I know if the pump is bad or if it's just a fuse?
First, check the fuse panel for the washer pump fuse. If the fuse is good, the next step is to listen for the pump. When you try to use the washers, you should hear a low humming noise. If there is no noise and the fuse is good, the pump motor has likely failed. If you hear the hum but no fluid comes out, the pump may be running but is internally damaged, or you have a clog in the lines or nozzles.
Can I drive my CTS with a broken washer pump?
Yes, you can still drive the vehicle. However, a non-functioning washer system can be a safety hazard if your windshield becomes dirty, obscuring your vision. It is recommended to get it repaired soon, especially if you live in an area with inclement weather or dusty conditions.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12487643 22780328 25790705
Fits 2003-2009 Cadillac CTS. The pump is a small 12V electric motor that press-fits into a grommet at the base of the washer fluid reservoir. It has one electrical connector and one fluid outlet port.
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.
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