
Ask a Question About This Product
Our in-house experts typically reply within one business day.
Our in-house experts typically reply within one business day.
CURT
Verify Fitment
Select your vehicle to confirm this part fits.

Always the correct part
We know our products
Quality Products
Free Shipping!

Always the correct part
We know our products
Quality Products
Free Shipping!
Select your vehicle to find the exact plug-and-play parts that fit — no cutting or splicing.

| Main Body Shape | Square |
| Material | Carbon Steel |
| Mount Type Description | Blank |
| Receiver Tube Size | 2 IN |
| Side Application Type Description | Blank |
| Tongue Weight (TW) | 2,400 LB |
| Warranty | Limited Lifetime Warranty (One-Year Finish, One-Year Parts) |
| Weight Carrying Capacity (WC) | 16,000 LB |
| Weight Distribution (WD) | 17,000 LB |
| Weight Distribution Tongue Weight (WDTW) | 2,400 LB |
| Side Application Type Description | Blank |
| Tongue Weight (TW) | 350 LB |
| Warranty | Limited Lifetime Warranty (One-Year Finish, One-Year Parts) |
| Drop | 3-1/4 IN |
| Finish | GLOSS BLACK POWDER COAT |
| Gross Trailer Weight (GTW) | 3,500 LB |
| Material | Blank |
| Mount Type Description | Blank |

CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 1979 - 2000 | GMC C2500 | With 10" step bumper |
Yes, part number 15317 is designed for 1988–2000 Chevrolet and GMC full-size pickups equipped with a 10" step bumper. If your truck has a different bumper style or is outside this year range, this hitch is not compatible.
The hitch weight is 60 lbs.
No, drilling is not required. The hitch uses existing factory bolt holes from the bumper bracket.
You will need a ratchet, 3/4" socket, 19mm socket, torque wrench, and safety glasses. A torque wrench is essential because fasteners must be torqued to specific values (110 ft-lbs for 1/2" fasteners and 87 ft-lbs for 12mm fasteners).
Yes. The manual specifies to lower the spare tire for ease of installation. After installation is complete, the spare tire is reinstalled.
The hitch includes: 8 × 1/2"-13 UNC 1-1/2" carriage bolts (for center-to-side plate assembly), 4 × 1/2"-13 UNC 1-3/4" carriage bolts (for middle frame holes with SP1 spacers), 2 × M12×1.75 hex bolts (for rearmost frame holes), 2 × 1/2" S-con washers, 2 × 0.250" × 1.50" × 2.00" square-hole spacers (SP1), 2 × 0.250" × 1.50" × 3.00" square-hole spacers (SP4), and 12 × 1/2"-13 UNC serrated-flange nuts. The rearmost holes use M12 hex bolts with conical-toothed washers; middle holes use 1/2" × 1-3/4" carriage bolts with SP1 spacers; forwardmost holes use 1/2" × 1-3/4" carriage bolts with SP4 spacers.
No. The factory bumper bracket bolts are removed and returned to the vehicle owner. The hitch is secured using the supplied fasteners (M12 hex bolts for the rearmost holes, and 1/2" carriage bolts with spacers for the middle and forwardmost holes).
All 1/2" fasteners must be torqued to 110 ft-lbs.
All 12mm fasteners must be torqued to 87 ft-lbs.
1. Loosely secure the center section to the driver and passenger side plates using 1/2" × 1-1/2" carriage bolts and hex flange nuts. 2. Lower the spare tire. 3. Remove existing bumper bracket bolts from both frame rails. 4. Align the rearmost holes in the side plates with the bolt holes from the factory brackets. 5. Secure the hitch with supplied M12 hex bolts and conical-toothed washers into the rearmost hole; install 1/2" × 1-3/4" carriage bolts with SP1 spacers into the middle holes and secure with 1/2" flange nuts; install 1/2" × 1-3/4" carriage bolts with SP4 spacers into the forwardmost holes and secure with 1/2" flange nuts. 6. Torque all 1/2" fasteners to 110 ft-lbs and all 12mm fasteners to 87 ft-lbs. 7. Reinstall the spare tire.
The manual does not provide the gross load capacity values for this hitch. The manual states: "Do not exceed vehicle manufacturer's recommended towing capacity." Contact Curt Manufacturing technical support at 1-877-287-8634 or consult your vehicle's owner manual for the maximum towing capacity.
Periodically check the hitch to ensure that all fasteners are tight and that all structural components are sound. The manual does not specify an exact interval, so inspect before each towing trip and at regular maintenance intervals.
Professional installation takes approximately 60 minutes. DIY installation by a novice takes approximately 69 minutes.
The Curt 15317 is designed for 1988–2000 Chevrolet and GMC full-size pickups with a 10" step bumper. If your truck matches these specifications, it will fit.
No drilling is required. The hitch uses existing factory bolt holes.
Torque all 1/2" fasteners to 110 ft-lbs and all 12mm fasteners to 87 ft-lbs.
The hitch weight is 60 lbs.
On Sale Today
Original price was $786.80. Current price is $649.99.


Quick Ship
In stock and ready to ship — order now!
FREE ShippingFREE SHIPPING
Estimated delivery Wed, Aug 12 - Sat, Aug 15
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
No reviews have been added for this product.