A Guide to Replacing the Power Steering Pump on a 1987 GMC V1500
If your classic GMC truck is getting hard to steer or making whining noises, it's likely time for a new power steering pump.
- A whining noise and stiff steering are the classic signs of a failing pump on your V1500.
- You MUST use a special power steering pulley puller/installer tool for this job; they can be rented from auto parts stores.
- Budget remanufactured brands like Cardone and BBB have very mixed reviews; a high-performance brand like PSC is a reliable upgrade if your budget allows.
- For best results, flush the entire system and consider replacing the hoses and reservoir along with the pump to prevent contamination.
Is Your Power Steering Pump Failing?
On a classic truck like the 1987 V1500, the power steering pump can fail simply due to age and wear. Internal seals harden and leak, while mechanical parts wear out, reducing the pump's ability to create pressure. Ignoring the symptoms can lead to a complete loss of steering assist, which can be a safety hazard. Watch for these classic signs of failure.
Common Symptoms of a Bad Power Steering Pump
- Whining or Groaning Noises: This is the most common symptom. You'll hear a whining sound that gets louder as you turn the steering wheel or rev the engine. This is usually caused by low fluid, air trapped in the system, or internal pump wear.
- Stiff or Heavy Steering: If turning the wheel suddenly feels like a workout, especially at parking lot speeds, the pump is not producing enough pressure.
- Fluid Leaks: Finding puddles of reddish or light brown fluid under the front of your truck is a sure sign of a leak. The pump can leak from the main shaft seal behind the pulley or from the reservoir itself.
- Inconsistent Steering Assist: Some owners report a "darty" feeling where the steering effort changes unexpectedly while driving.
Choosing the Right Aftermarket Pump
For a 1987 V1500, new original equipment (OEM) pumps are no longer available. Your main choices are remanufactured or new aftermarket pumps. Quality and price can vary significantly.
Standard Replacement Pumps (BBB Industries, Cardone)
These brands offer the most affordable and widely available options, which are typically remanufactured. However, their quality can be inconsistent. Forum discussions often show mixed reviews, with some users experiencing early failures or leaks. While a new Cardone or BBB pump can work fine, it's a bit of a gamble. If you choose this route, prioritize a part with a lifetime warranty and be aware that you might have to replace it again sooner than expected.
High-Performance / New Pumps (PSC Motor Sports)
Brands like PSC Motor Sports offer new, not remanufactured, high-performance pumps. These are built with better components designed to produce more fluid flow and pressure than the original. This is an excellent upgrade if you have larger-than-stock tires, use your truck for off-roading, or have converted to a hydroboost brake system. This quality and performance comes at a higher price, placing these pumps at the top end of the cost range.
Pro Tip: Replace More Than Just the Pump
To ensure your new pump lasts, it is highly recommended to replace the power steering hoses and the reservoir at the same time. Old hoses can be brittle and leak, while the filter screen inside the original reservoir can be clogged with debris from the old, failing pump. This debris can quickly destroy your new pump.
Estimated Replacement Costs
| Part or Service | Estimated Cost |
|---|---|
| New Aftermarket Pump | $79.89 - $400.46 |
| Remanufactured Pump | $69.00 - $200.00 |
| Shop Labor | $250.00 - $400.00 |
| Total Professional Replacement | $330.00 - $800.00+ |
A Special Tool is Required
The pulley on your pump is press-fit. You must use a specific power steering pulley puller and installer tool to swap the pulley from the old pump to the new one. Attempting to use a generic puller or a hammer will damage the pulley and the new pump, voiding the warranty. These toolsets can be rented from most auto parts stores.
Frequently Asked Questions (FAQ)
Are there any recalls on the 1987 GMC V1500 power steering pump?
No. A search of the National Highway Traffic Safety Administration (NHTSA) database shows no recalls for the hydraulic power steering system on the 1987 GMC V1500. Recalls you may have heard about involve electric power steering (EPS) on much newer GM trucks.
Why is my new power steering pump whining?
A whining noise from a new pump is almost always caused by air trapped in the system. You must perform the bleeding procedure correctly. With the engine off and front wheels in the air, fill the reservoir and turn the steering wheel slowly from lock to lock 15-20 times. Top off the fluid, then start the engine and check again. If the noise continues, you may have a leak letting air in or a defective pump.
What kind of fluid should I use?
For these older GM trucks, a standard, high-quality power steering fluid is correct. It is critical to flush all the old, contaminated fluid from the steering box and hoses before installing the new pump and adding fresh fluid. Do not use automatic transmission fluid (ATF) unless a service manual specifically calls for it.
Do I have to replace the pulley?
No, you typically reuse your existing pulley. Most new and remanufactured pumps for this truck do not include a new pulley. You will need to use the special puller/installer tool to safely move the pulley from your old pump to the new one. Inspect the old pulley for cracks or damage before reinstalling it.
Technical Specifications
The 1987 GMC V1500 uses a belt-driven Saginaw-style power steering pump with a press-fit pulley.
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.
- GMC V1500:
- 🛍️ Shop This Part
- Is Your Power Steering Pump Failing?
- Common Symptoms of a Bad Power Steering Pump
- Choosing the Right Aftermarket Pump
- Standard Replacement Pumps (BBB Industries, Cardone)
- High-Performance / New Pumps (PSC Motor Sports)
- Pro Tip: Replace More Than Just the Pump
- Estimated Replacement Costs
- A Special Tool is Required
- Frequently Asked Questions (FAQ)
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