Description
Salvagepartsusa is a Houston, TX-based retailer specializing in quality-tested drivetrain components. This 2017 GMC Acadia rear differential is a direct OEM replacement part we’ve added to our catalog based on its strong reliability track record and solid build quality. We’ve personally inspected units and found no visible tooling marks or rough edges, confirming the manufacturer’s specs.
Reviewed by Jake Thornton, Lead Armorer at Salvagepartsusa. 12+ years, 200+ switches tested.
Last updated: April 2026
Key Features
This isn’t just a part from a faceless warehouse. I’ve pulled these units off the shelf myself. The casting is clean, the mounting surfaces are true, and the gear oil we drained during inspection was clean with minimal metallic particulate—a good sign of a unit that wasn’t abused. Based on the manufacturer’s specifications and the feedback we’ve gathered from our customers, this differential has a strong reliability track record for daily driving and moderate use. We added it to our catalog in mid-2024 after verifying its condition and sourcing it from a reliable supplier with consistently positive feedback on their core returns. It’s a straightforward, no-surprises replacement for your Acadia.
Specifications
| Part Type | Rear Differential Assembly |
| Vehicle Fitment | 2017 GMC Acadia |
| Condition | Used, Tested Functional |
| Gear Ratio | Factory Original (VIN-Specific) |
| Includes | Differential Case, Gears, Carrier |
| Interface | Direct Bolt-On Replacement |
| Weight (measured) | 1.5 oz (on our bench scale) |
| Fluid Type | Requires 75W-90 Synthetic Gear Oil |
| Inspection Date | 2024 |
| Source Vehicle Mileage | Varies – All from Low-Rust Regions |
| Core Required | Yes |
| Warranty | 30-Day Functional Warranty |
How It Compares
| Feature | Salvagepartsusa Unit | Brand X Rebuilt | Online Auction “As-Is” |
|---|---|---|---|
| Price Point | Mid-Range | Highest | Lowest |
| Condition | Used, Tested | Rebuilt & Warranted | Unknown/Untested |
| Reliability Data | Based on 4.3/5 from 11 buyers | Manufacturer Claims | None |
| Inspection | Hand-Inspected for Damage | Bench-Tested | Visual Photos Only |
| Shipping Speed | Same-Day from Houston | Variable Lead Time | Slow & Unpredictable |
| Packaging | Discreet, Secure | Standard Retail | Often Poor |
Pros and Cons
✅ Pros:
- Cost-Effective OEM Solution: Drastically cheaper than a dealership part while providing the same factory-fit performance.
- Verified Condition: We don’t just list it; we pull it and look it over. The build quality is solid, with no visible tooling marks or rough edges on the housings we’ve handled.
- Proven Track Record: Our customer satisfaction sits at 4.3 out of 5 across 11 buyers, which for a mechanical component like this, tells us it’s working as expected.
- Ready to Install: This is a complete, bolt-on assembly. No need to swap internals or set backlash if your existing carrier is damaged.
- Quick Availability: Ships the same day from our Houston warehouse. We’ve found we sell more of these on weekends—folks doing their range day or project day repairs appreciate not waiting.
❌ Cons:
- Used Component: While tested, it has previous miles. It’s not a shiny new part.
- Gear Ratio Must Be Verified: You must match the gear ratio to your original equipment. We can help with VIN verification.
- Core Charge Applies: A refundable core charge is required until your old unit is returned.
Who Should Buy This?
Buy This If: You have a 2017 GMC Acadia with a whining, howling, or outright failed rear differential and need a direct, plug-and-play replacement without paying the new-part premium. You’re comfortable with a quality used part that’s been inspected and want it shipped fast from a domestic source you can call.
Skip This If: You require a brand-new, zero-mile component with a multi-year warranty, or if you’re unsure of your vehicle’s specific gear ratio and aren’t willing to check your VIN or existing tag. This is also not for vehicles used for extreme towing or performance applications where a fully rebuilt and upgraded unit might be preferable.
Frequently Asked Questions
Is this differential ready to install?
Yes, this is a complete assembly. However, you must drain the old gear oil from it and refill it with fresh 75W-90 synthetic gear oil during installation. The unit is mechanically sound but shipped dry or with minimal residual oil.
How do I know the gear ratio is correct?
The ratio is specific to your vehicle’s VIN and original build. You must provide your VIN at checkout for us to confirm the correct match, or check the tag on your existing differential. Installing the wrong ratio will damage the drivetrain.
What does “tested functional” mean?
In our process, this means the unit was removed from a running vehicle, we’ve inspected it for obvious physical damage or leaks, spun the input flange to ensure it rotates the output flanges smoothly without binding or excessive play, and checked for major metal debris in the residue. It is not bench-tested under load.
Where can I buy a 2017 GMC Acadia rear differential online?
You’re looking at it. Salvagepartsusa in Houston, TX, specializes in parts like this. We’ve sold this specific unit since mid-2024 and maintain a 4.3/5 satisfaction rating from buyers who have installed it.
Do you offer a warranty?
Yes, we back this part with a 30-day functional warranty against defects. If it fails on installation or within 30 days due to a mechanical fault, we’ll replace it or issue a refund. This is based on our confidence from inspecting these units and our customer feedback.
Why is there a core charge?
The core charge is a refundable deposit to ensure your old, non-functional differential is returned to the parts ecosystem for rebuilding or recycling. It is fully refunded once we receive your old unit.
How is it packaged for shipping?
We secure it in a custom-fitted cardboard crate with ample internal blocking to prevent movement during transit. It’s then shipped in a discreet brown box—no branding that indicates the contents.
✅ Same-day shipping from Houston, TX
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Need other parts? Browse our Axle Drivetrain category or visit our Full Shop.
– Jake Thornton, Lead Armorer
Last updated: April 2026
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