Choosing the Right Universal Joint for Your 1987 GMC R1500
Don't let a bad U-joint leave your classic GMC truck stranded; here's what you need to know.
- A clunking noise when shifting or a vibration at speed are the most common signs of a failing U-joint.
- Ignoring a bad U-joint is dangerous and can lead to the driveshaft separating from the vehicle.
- For the best results, choose a high-quality, non-greaseable U-joint from a top brand like Dana/Spicer or SKF.
- If one U-joint has failed, it is wise to replace both the front and rear joints on the driveshaft at the same time.
Is Your U-Joint Failing?
A failing U-joint on your R1500 isn't something to ignore. The symptoms usually start small but can lead to a catastrophic failure where the driveshaft separates from the truck. This can cause a total loss of power and significant damage to other parts of your vehicle. Look for these warning signs:
- Clunking Noise: A distinct "clunk" or "clang" when you shift from park into drive or reverse is a classic sign of a worn U-joint with too much play.
- Vibration at Speed: A vibration that you can feel through the floor or seat that gets worse as you drive faster often points to a bad U-joint. This is different from a tire vibration and will be tied to the driveshaft's speed.
- Squeaking or Chirping: A rhythmic squeak that changes with your speed can mean the U-joint has lost its grease and the internal needle bearings are running dry.
- Visible Rust Dust: If you look under the truck, you might see a reddish-brown dust around the U-joint's bearing caps. This is a sign that the needle bearings inside are grinding themselves into powder.
Critical Warning: Do Not Ignore Symptoms
If a U-joint fails completely while you are driving, the driveshaft can drop onto the road. This can cause you to lose control of the truck, dig into the pavement, and lead to extensive damage to your transmission, exhaust, and brake lines. At the first sign of trouble, get it inspected.
Choosing the Right Aftermarket U-Joint
For a 1987 GMC R1500, you have several good aftermarket options. The original factory U-joints were typically non-greaseable and very durable. Many experienced mechanics recommend sticking with a high-quality, sealed, non-greaseable U-joint for the longest life with no maintenance. Greaseable joints are an option, but they require regular service and have seals that can fail more easily if neglected.
Brand Tiers for Your R1500
Not all brands are created equal. Based on owner feedback and mechanic consensus, here is a breakdown of the available brands:
Tier 1: OEM Quality or Better
- Dana / Spicer: This is the most recommended brand by a wide margin. Spicer was often the original equipment manufacturer (OEM) for GM trucks. Their non-greaseable "Life Series" joints are considered a top-tier, long-lasting replacement that you can install and forget.
- SKF: Known for high-quality bearings, SKF also makes excellent U-joints. Their "Brute Force" line is a heavy-duty, non-greaseable option that is well-respected.
Tier 2: Solid Aftermarket Options
- Moog: Moog used to be a top name, but reviews have become mixed, with some concerns about inconsistent quality. Their "Super Strength" line is generally considered a reliable choice, but many old-school mechanics now prefer Spicer.
- Yukon Gear: Known for performance and differential parts, Yukon Gear offers quality U-joints that are a solid choice, often used in applications that see heavy use or off-roading.
Tier 3: Budget-Friendly
- GMB: GMB is a known aftermarket manufacturer that provides a functional, budget-friendly option. While it may not have the top-tier reputation of Spicer, it's a viable choice for those on a tighter budget.
Pro Tip: Replace in Pairs
Your driveshaft has at least two U-joints (front and rear). If one has failed due to age and mileage, the other is likely not far behind. It's good practice to replace them all at the same time to save on future labor and prevent another breakdown.
Cost of Replacing a Universal Joint
The cost can be broken down into parts and labor. You can save significant money by doing the job yourself if you have the right tools.
| Item | Cost Range |
|---|---|
| New Aftermarket U-Joint | $20.60 - $107.89 |
| Shop Labor | $120 - $250 |
| Total Professional Replacement (1 Joint) | $140 - $360 |
Note: Costs are estimates. Labor can vary by region and shop. Replacing both joints will increase the part cost but should not double the labor cost.
Frequently Asked Questions
Do I need special tools to replace a U-joint?
Yes, you will need tools to press the old joint out and the new one in. While a hydraulic shop press is ideal, many DIY mechanics successfully use a sturdy bench vise and a set of sockets. A ball joint press kit can also be rented from many auto parts stores and works well for this job. Avoid using just a hammer, as you can easily damage the driveshaft yoke or the new U-joint bearings.
Should I get a greaseable or non-greaseable U-joint?
For most owners, a high-quality non-greaseable U-joint (like Spicer or SKF) is the recommended choice. They have better seals and last a very long time without any maintenance, just like the original parts. Greaseable joints are only better if you are diligent about greasing them at every oil change; otherwise, they can fail sooner than a sealed joint.
Were there any recalls on the 1987 GMC R1500 for U-joints?
No. Searches of the NHTSA database and other records show no specific recalls or Technical Service Bulletins (TSBs) related to universal joint failure for the 1987 GMC R1500. Any failures today are due to the age and wear of the original components.
My original U-joint seems to be held in with plastic. How do I get it out?
Some GM trucks of this era came with U-joints that were retained by injected nylon plastic instead of metal clips. To remove them, you must first melt the plastic out. A small propane torch can be used to heat the yoke ears until the plastic melts and can be pushed out. Once the plastic is gone, the joint can be pressed out like any other.
Technical Specifications
The 1987 GMC R1500 can have different U-joint sizes depending on the driveshaft configuration. It is crucial to measure your existing U-joint caps or match the part number to ensure you purchase the correct replacement. Some original joints were retained with plastic injections, which must be melted out for removal.
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 R1500: